Collection Care blog

Behind the scenes with our conservators and scientists

4 posts from October 2014

26 October 2014

Bookbinder Bernard Middleton celebrates 90th birthday

Born on 29 October 1924, legendary bookbinder Bernard Middleton celebrates his 90th birthday this week. Bernard spent much of his life working with British Library collection items at the Library’s bindery, then known as the British Museum Bindery, following his apprenticeship there.

 

Bernard Middleton stands before a rack of good tooling tools, picking one off the shelf.
Bookbinder Bernard Middleton at work. Photo courtesy of Bernard Middleton.


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Bernard Middleton was interviewed in 2007 for Crafts Lives* by oral historian Hawksmoor Hughes. Crafts Lives is one of the oral history interview programmes run by National Life Stories, the oral history charitable trust based at the British Library. Bernard spoke about his time at the Central School of Arts & Crafts where he gained a general education and a grounding in bookbinding.

Listen to Bernard Middleton on the Central School of Arts and Crafts

“I was very happy there, I liked it.” recalls Bernard, “I liked the fact that my father had been taught in the same room, 25-26 years previously. And I was taught by his fellow student. It was a very good school – it was regarded really as the sort of Oxbridge of the craft world.”

The Central School of Art and Design was established in 1896 and became part of the London Institute almost a hundred years later in 1986. In 1989 it merged with Saint Martin’s School of Art forming Central Saint Martin’s College of Arts and Design, which today has its campus at King’s Cross, just a ten minute walk from the British Library.

The first thing Bernard was taught was how to fold paper, followed by instruction on how to sew a pamphlet , which he describes as “about the simplest thing one can possibly do in bookbinding”. The class learned the history of the way books developed from the scroll to the codex, and gradually took on more complicated bindings including cloth, leather (half-leather, full-leather), and gold-tooling.

Describing himself as “shy” and “well-behaved”, Bernard recalls the odd mischievous day which included throwing balls of wet cotton wool at the ceiling. “I remember throwing one and it hit the teacher in the middle of the back and stuck on his round coat. I was rather embarrassed when he turned around and saw me.”

When Bernard first came to the Bindery there were about eighty workers there and most of his time was spent making end papers. He quickly gained proficiency by working next to journeymen who taught the apprentices their skills. Bernard learned how to bind both old and new books acquired by the Museum’s Library.

Listen to Bernard Middleton on the British Museum Bindery

It was a hard life, with an initial salary of £1 a week and only a seven minute tea break each day: “We had to stand all day and that was hard work when I first went there. We were allowed to sit down for seven minutes at four o’clock to have tea, not in the morning – you had to stand up to have it then…I think it had been five minutes and then two more minutes were negotiated, and then the deputy foreman would bang with a stick on his press to indicate that we should stand up and get on with our work again.”

Bernard’s subsequent career has included managing Zaehnsdorfs, a large and successful binding firm; establishing his own business; researching and writing on the history of bookbinding and restoration; designing and producing approximately 100 original bindings; as well as receiving many commissions from noted collectors, academic institutions and libraries. He was elected a fellow of the Royal Society of Arts in 1951 and received an MBE in 1986.

 

The spine and front cover bound in a mustard yellow leather, with a series of horizontal lines running across at the middle and bottom of the book. There is a vertical black line with diagonal horizontal lines running about one third of the way across the front cover.
Bernard Middleton’s 1965 binding on his book A History of English Craft Bookbinding Technique New York & London, 1963. C.108.d.39

 

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Some examples of his bindings are below:

The spine bound in red leather, with the title and author running vertically down the spine.
BL shelfmark C.160.c.17

 

The spine and front cover bound in a deep red colour with a geometric circle at the centre of the cover. The circle has a background in deep forest green, with gold geometric shapes running through it--similar to a mandala.
A 1964 binding on Howard M. Nixon, Twelve Books in Fine Bindings from the Library of J. W. Hely-Hutchinson Oxford, 1953. C.160.c.17


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The spine in a tan-orange leather, with horizontal lines and a larger dark green horizontal stripe down the center. This strip has geometric designs in down it.
BL shelfmark C.188.b.43

 

The cover in a tan-orange colour, with stripes mirroring the spine (smaller ones plus larger green ones with geometric designs). In the centre is a large black stripe with pattern in gold leaf running down it.
A 2004 binding on Marianne Tidcombe, The bookbindings of T.J. Cobden-Sanderson London, c1984. C.188.b.43


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More examples of Bernard’s bindings can be seen at the St Bride Library off Fleet Street in London from 27 October to 14 November, 2014.

“My designs are intended to please the eye, not engage the intellect, principally by the employment of textures, strongly defined shapes and contrasts, and by the play of light on gold, preferably in combination and in a manner which complements the book." Bernard Middleton, Recollections (London, 2000), p.85.

With thanks to Philippa Marks (Curator, Bookbindings) and to Mary Stewart (Curator, Oral History) who edited the audio clips.

*Since the Crafts Lives project started in 1999, over 130 in-depth life stories have been recorded with British craftspeople, exploring both their personal lives and their work in the fields of pottery, glass, metalwork, jewellery, textiles and book arts. In August 2014 over 80 of these interviews were made available to listen to online in their entirety – including 13 craftspeople that work in the area of book arts, bookbinding and letter cutting. Visit http://sounds.bl.uk/Oral-history/Crafts to find out more.

21 October 2014

Paper cuts: small but mighty!

Hardly noticeable and barely bleeding, paper cuts are the mother of all library injuries. Anyone who deals with paper on a daily basis will have at some point suffered such an affliction. Paper cuts cause a seemingly out of proportion amount of pain due to the anatomy of our skin and the structure of paper. When very thin and held in place, a sheet of paper becomes inflexible and can exert very high levels of pressure – enough to slice through flesh! Yikes! Let’s go under the microscope to see what's happening...

An edge of a single sheet of paper, with the rest of the piece of paper blurred out and against a black background.

Figure 1: A single sheet of paper at x30 magnification.

A finger with a paper cut against a black background.

Figure 2: Paper cuts - small but mighty!

Most paper cuts result from new sheets of paper held strongly in place. A rogue sheet may come loose from the pack but remain held in position by the rest of the tightly-knit sheets. In paper, more resistance is felt when a force is applied parallel to a sheet of paper. This has to do with the paper’s tensile strength. Tensile strength measures the ability of a material to resist rupture when force is applied to one of its sides under certain conditions. Held in place, the sheet of paper becomes extremely resistant to buckling, stiffens, and acts as a razor.

The edges of a stack of paper with one sheet, about halfway down, sticking out from the stack.

Figure 3: A sheet of paper that strays from the pack can cause serious paper cuts!

A paper’s edge may appear to be smooth and flat, but on a microscopic scale paper edges are jagged. Paper cuts leave a wound more like one from a saw than a knife (a miniature papery saw).

The edges of pages of a book, looking quite sharp.

Figure 4: Pages from a copy book at x30 magnification. Fibres at the surface give paper a serrated edge. The black lines are page lines.

Paper cuts are remarkably painful. They usually occur in the fingertips, which have a greater concentration of nerve cells (neurons) than the rest of the body – an evolutionary trait to protect us during the exploration of our environment. Neurons send chemical and electrical signals to our brain, and some of them, called nociceptors, detect potential harm. Paper cuts stimulate a large number of nociceptors in a very small area of the skin. Shallow paper cuts don’t bleed very much so pain receptors are left open to the air resulting in continuous pain as the wound cannot clot and seal. As we continue to use our hands, the wound flexes open, continually distressing these neurons.

Not only do paper cuts part the flesh with a micro-serrated paper edge, but they also damage skin either side of the wound due to the composition of the paper. Pain receptors are continuously irritated by the combination of cellulosic wood pulp, rags, grasses, chemically-coated fibres, and bacteria that make up paper. Paper may also include other additives such as chalk or china clay to make the paper easier to write on. Sizing gives us a great variety of papers to suit the specific type of ink we wish to apply, but involves mixing many additives into the pulp to determine the correct surface absorbency.

Paper cuts from envelopes can be particularly stingy due to the layer of glue along the sealing tab. The glue is made from gum arabic, which although edible to humans, can pack a punch if embedded inside a wound. Gum arabic is the product of hardened sap taken from two species of acacia trees, and is also used as a binder for watercolour painting, and in traditional lithography.

Magnified, adhesive on an envelope looks shiny and jelly-like.

Figure 5: Gum arabic glue at x30 magnification coats the paper tab on an envelope.

A close up of an envelope tab with adhesive.

Figure 6: Gum arabic glue at x200 magnification coats the paper tab on an envelope. When the gum is moistened it forms a seal with the adjacent paper.

When skin closes around the paper cut these foreign particles become trapped inside causing a great deal of pain. This is why a cut from a razor blade is usually less painful than that from a paper cut: razor blades make clean incisions without leaving behind any foreign particles. It hurts initially, but the pain soon ebbs away. Bleeding caused by a razor cut helps to wash away any infection-causing particles, while paper cuts bleed very little (this also reduces your chances of getting any sympathy!)

Three blades of a razor are shown at close up, showing sharp edges.

Figure 7: A razor blade at x50 magnification.

The sharp and smooth edge of the razor is even more apparent at high magnification.

Figure 8: A razor blade at x200 magnification. The razor’s edge is smooth allowing a clean incision without introducing foreign bodies.

It might seem strange that sometimes needles for a flu jab require quite a bit of force to pierce the skin, yet paper (PAPER!) can slice through. This is due to the random orientation of collagen fibres in our skin allowing us to withstand pinpoint forces.

The tip of a finger is being poked by a needle.

Figure 9: Human skin feeling the pressure under a sharp pin (x20 magnification).

Our skin does not have a comparable strength against shearing forces such as those exerted by paper, and so, we are susceptible to the small but mighty paper cut. Libraries can be dangerous places. Be careful out there!

Christina Duffy (@DuffyChristina)

 

Further learning:

Paper May Be the Unkindest Cut, Scientific American, Volume 306, Issue 3 , Mar 1, 2012 |By Steve Mirsky 

Why Do Paper Cuts Hurt So Much? Scientific American - Instant Egghead #25

 

09 October 2014

Burnt Cotton Collection survey enables digitisation prioritisation

With the recent multispectral imaging of the burnt Magna Carta hitting the headlines following our blog post on the 800 year old Magna Carta revealing its secrets, there has been a lot of interest in the conservation work required to protect such items. The so-called “burnt” Magna Carta (Cotton charter xiii 31a) suffered fire damage in Ashburnham House in Westminster on 23 October 1731. This 1215 exemplification formed part of an exquisite library assembled by English antiquarian Sir Robert Cotton during his lifetime (1571-1631). Cotton’s library forms the basis of our collections at the British Library today, and a recent conservation survey of the burnt material has allowed us to categorise items based on their relative condition, enabling us to immediately identify items suitable for digitisation. This has vastly improved our workflow allowing digital access to a wider audience in a shorter time. 

This piece includes material from an article published by Taylor & Francis Group in Journal of the Institute of Conservation on 29 November 2013, available online at: http://www.tandfonline.com/doi/abs/10.1080/19455224.2013.815122#.VFDzZvmsWtB.

You can see the Magna Carta is suffering from fire damage--the parchment is burnt, discoloured, and the text appears unreadable. You can see the seal hanging from the bottom of the parchment.

A close-up of the disfigured wax seal. The seal rests in a mount which is cut just bigger than its shape--this keeps it in place and secure.
The burnt 1215 Magna Carta suffered fire damage and subsequent interventive treatment. The vulnerable wax seal of the charter melted and distorted in the intense heat. 

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In the Ashburnham House fire a quarter of the manuscripts were either damaged or destroyed in the blaze, and attempts to extinguish it exacerbated that damage. The documents suffered shrinkage and distortion, bindings were carbonised, ink was lost, soot and dirt was ingrained, tide marks formed on the leaves, and parchment (animal skin) gelatinised. Gelatine is the brownish end-product of a rapid degradation of parchment collagen. Remedial work caused further damage with many of the manuscripts broken up and rebound during salvage. Incorrect reassembly impacted on the codicological history of many of the manuscripts. The darkened gelatinous material which formed along the edge of the parchment was trimmed away from some manuscripts. Unidentified fragments were gathered and put into drawers.

The collection was untouched until the establishment of the British Museum in 1753, where over the coming years invasive treatments were recorded. To separate the leaves which had glued together by gelatinisation, about 40 manuscripts were immersed in a hot aqueous solution (likely to be ethanol in water). Incisions along the parchment edges were made to allow the leaves to dry flat under pressure. Despite the efforts, leaves remained brittle and fragile. Inlaying of parchment fragments into paper was completed in 1856, but a huge number of fragments remained loose and unidentified. While the edges of loose fragments were protected by this inlaying method, over time the degradation of materials caused further concern. The brittle fragments were susceptible to break with every page turn, and acidic paper in heavy volumes tended to cockle preventing the volumes from closing.

The volume rests open, with the left side being supported by a foam wedge and the pages held open with a snake weight on the left side. The burnt parchment pages have been adhered to a tan paper, and all pages rebound.
Cotton Tiberius A. XII. Parchment fragments were attached to paper in the nineteenth century and incisions were cut along the sides to allow the leaves to lay flat.

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Our conservators surveyed 243 items from the Cotton Collection, including 21 paper manuscripts. Items were graded on their physical, chemical and overall conditions based on an assessment of the state of the binding and parchment substrate, and thus rated for treatment priority.

A bar graph showing different characteristics (active mould, old repairs, staining, etc.) and the percentage of items with that characteristic.
Results of the survey of 243 Cotton Collection volumes. From Figure 2 and 5 in The conservation of the burnt Cotton Collection in the Journal of the Institute of Conservation, 2013
A pie chart showing different grades of damage, from Uniform Good Condition (A) to High Degree of Damage (E).
Pattern of damage where D (High degree of damage) accounts for 61% of the total items examined. From Figure 2 and 5 in The conservation of the burnt Cotton Collection in the Journal of the Institute of Conservation, 2013.

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The nineteenth century treatments have been fundamental to the preservation of the Cotton Collection, and many items thought to be lost have since been rediscovered. The condition survey enabled us to quantify the damage and develop a strategy for the long-term preservation of the burnt Cotton Collection. Items identified as being fragile were immediately withdrawn from library use, while research to determine the best methods of stabilising and housing the items was undertaken. The use of analytical techniques such as near-infrared (NIR) spectroscopy for assessing the deterioration or parchment has enabled a better awareness of the nature and condition of these manuscripts. This information has helped to support the choice and realistic scope of conservation methods. In the case of the burnt Cotton Collection, the future project is now directed towards a preservation approach, including digitisiation and multispectral imaging, rather than an interventive conservation one.

Christina Duffy (@DuffyChristina), Imaging Scientist

 

Further reading

The conservation of the burnt Cotton Collection, Mariluz Beltran de Guevara and Paul Garside, Journal of the Institute of Conservation, 2013. Vol. 36, No. 2, 145 –161, http://dx.doi.org/10.1080/19455224.2013.815122

Collection Care fired up for BBC Four appearance, Christina Duffy: http://britishlibrary.typepad.co.uk/collectioncare/2013/08/collection-care-fired-up-for-bbc-four-appearance.html

Crisp as a Poppadom, Ann Tomalak: http://britishlibrary.typepad.co.uk/digitisedmanuscripts/2013/02/crisp-as-a-poppadom.html

‘Their Present Miserable State of Cremation' the Restoration of the Cotton Library, Andrew Prescott: http://www.uky.edu/~kiernan/eBeo_archives/articles90s/ajp-pms.htm

07 October 2014

800 year old Magna Carta manuscript reveals its secrets

Ground-breaking multispectral imaging work of the British Library’s burnt copy of the 1215 Magna Carta has recovered text which has not been read in 250 years.

This work has been completed by British Library conservators and scientists in preparation for next year’s 800th anniversary of the sealing of the Magna Carta. The so-called ‘burnt’ copy of the Magna Carta is one of four original manuscripts from 1215 which survive. In February 2015, the four manuscripts will be brought together for the first time in history for a special 3-day event, which will allow further academic study of them side by side, as well as the once-in-a-lifetime opportunity for 1,215 people to view them together.

The Magna Carta rests on a camera stand, with the camera positioned above it.  A multispectral colour image of a section of Magna Carta showing loss of legibility. The charter is tan in colour with very little text visible.

A processed image of the charter revealing text thought to be lost forever. This image appears in black and white.

Figure 1: Top left: The “Burnt Magna Carta” ready for multispectral imaging. Top right: A real colour image of a section of the charter. Bottom: A processed image of the charter enhanced to reveal text thought to be lost.

The British Library owns two of the original 1215 Magna Carta manuscripts (the other two are held at Lincoln and Salisbury Cathedrals). The story of the ‘Burnt Magna Carta’ (Cotton charter xiii 31a) held in our collections is a truly remarkable one of survival against all the odds. In 1731 it was damaged in the Cotton Library fire, and subsequently staff at the British Museum Library used 19th century techniques to try to flatten and mount it, which has contributed to its current condition today rendering the text very difficult to see.

The multispectral imaging of the burnt Magna Carta was conducted as part of a major project involving the reframing and scientific analysis of all the Magna Carta charters held in our collections ahead of the 2015 anniversary. The Collection Care team provided an initial examination of the original frames to determine their structure and composition. All original mounting materials in contact with the charters were tested using infrared spectroscopy, pH tests, and lignin tests to determine their stability and compatibility with new materials. Once the charters were removed from the frames, near-infrared spectroscopy and high resolution digital microscopy was used to investigate the condition of the ink and parchment as part of the overall condition assessment.

With the frames and glass removed there was a rare opportunity to employ the cutting-edge technique of multispectral imaging enabling us to virtually peel away the layers of damage currently affecting the manuscript.

Conservator Kumiko Matsuo cuts down a piece of white foam with a scalpel. A green cutting mat sits below the foam, and a bookcase is visible just behind her.  Conservation Scientist Dr Paul Garside begins to remove the wooden frame, which is resting on a table.

Conservator Gavin Moorhead uses a spatula to slowly light the mount away from the charter.  Imaging Scientist Dr Christina Duffy looks at her computer screen which shows a section of the charter. The full charter rests on a table next to her with a microscope attached to the computer.
Figure 2: Clockwise from top: Temporary housing is prepared to store the charter when removed from the frame; the original wooden frames are removed to enable access to the charter; the charter is released from the mounting; once the charter is free from the frame it can undergo condition assessment.

The "Burnt Magna Carta" also known as Cotton charter xiii 31 is pictured here in full view. Little text is visible, and it's clear that the charter has suffered damage, particular along the right hand side as it appears fragmented.  A microscopy image showing detail of iron gall ink loss. Some ink is still visible while next to it is an area where ink used to be.

Figure 3: Left: The “burnt” copy of the Magna Carta, Cotton charter xiii 31a, is one of the four original manuscripts from 1215 which survive. Right: Much of the ink has been lost with only a few remaining initials (shown here at 50x magnification).

Multispectral imaging is a non-destructive, non-invasive imaging technique using different colour lights, including ultra-violet and infrared, to recover faded and lost text. A high-resolution camera is securely mounted directly over the charter, which is then illuminated with LED lights ranging from the ultraviolet at a wavelength of 365 nm, through the visible region, and right up to a wavelength of 1050 nm in the infrared region. The chemical composition of the material in the charter is varied (ink, parchment, etc.), and so reacts differently to the lights. We are able to see, and capture, additional information undetectable by the human eye.

Figure 4:  An animated gif comparing the original colour and processed images. 

Ultra-violet colour image created by combining three captured images (UV light with R, G, and B filters). The image has a violet hue and the text is now visible albeit faded in areas where it is hidden to the naked eye.

Figure 5: A colour UV image reveals regions of text which are completely faded to the naked eye.

Using this technology and expertise available to us in the 21st century, we are able to preserve the Magna Carta for the next 800 years and present these iconic documents in the best possible condition for visitors who come to see them during the anniversary year.

Multispectral data is still being processed and will be published along with other scientific data collected after the British Library’s exhibition ‘Magna Carta: Law, Liberty, Legacy’, which runs from 13 March – 1 September 2015.

 

Christina Duffy (@DuffyChristina), Imaging Scientist