Collection Care blog

Behind the scenes with our conservators and scientists

03 May 2023

Whales, horses and zebras—oh my! Conservation work for the Animals: Art, Science and Sound exhibition

In preparation for the Animals: Art, Science and Sound exhibition, Conservation assessed the suitability for display of over 150 BL collection items, of which just over 120 items actually made it into the exhibition. Seventy of these items came into the conservation studio for treatment prior to being displayed. The kind of treatment for each item varied greatly. Some volumes needed intensive treatments because the covers had become completely detached, and others just needed some minor care, such as tidying board edges that had become split and frayed. Some of the paper items needed tear repairs or flattening because they had been stored rolled or folded and many of them needed window mounting so they could be framed or displayed vertically.

The conservation work for all the items was shared between many conservators in the studio. The work started in January, giving team members enough time to complete their treatments prior to the install of the exhibition in March. Conservation play an integral part of the exhibition process and without the support we provide, many of these wonderful items would not make it into the show.

Below, three conservators discuss a few items that came through the studio for treatment ahead of the exhibition.

Amy

I worked on several volumes for Animals.  My favourite was Or.917, which contains very detailed paintings of whales. . My attention was immediately caught by two in particular – as well as being beautifully painted they both have rather evocative facial expressions!

A painting of a killer whale on a cream background. It is shown from the side, with its tail in the air and its flippers held out on either side of its body. The whale is mostly black except for its belly, which is grey and white. The whale’s eye is half-shut and it looks sleepy. Its ear is shown as a little white circle behind the eye. Its mouth is open, showing its pink gums and sharp white teeth. There are eight labels in Chinese characters which are joined to the whale’s dorsal fin, eye, tongue, ear, blowhole, and belly with red lines.
Painting of a killer whale
A painting of a mottled grey whale on a cream background. The whale’s skin has been given a textured appearance on its back and side by manipulating the paint with a circular sponge or fingertip. It is shown from the side and holds its flippers out on either side of its body. There are areas of small white dots on the whale’s back, belly, tail, jaws, and on one of its flippers. This gives the impression that the whale is covered with barnacles. It also has small white whiskers on its chin. The whale’s eye is half shut and the curve of its mouth is like an upside-down smile. There are ten labels in Chinese characters which are joined to the whale’s chin, back and belly with red lines. Below the whale’s head is a picture of a piece of baleen – it is a small white rectangle with long hair-like strands extending from one of the long sides. It is also labelled in Chinese characters with a red line.
Painting of a whale with barnacles

The most badly-damaged book was an early nineteenth-century volume entitled Fishes of the Ganges (Mss Eur E72). When the book came to the conservation studio the paintings themselves were in good condition, but 200 years of usage had taken their toll on the volume’s binding. The green leather of the spine was badly abraded and several pieces of it were missing. This posed a structural risk to the book, as it made it more likely that the boards would become detached at some point in the future. The red-brown paper which covered both boards was also not in a good state, with the pigment faded and rubbed away and pieces missing at the corners and edges of the boards.

A hardcover book against a grey background, photographed showing the front cover.  The book is covered in reddish-brown paper with a blue marbled pattern and a blue-green leather spine. Some areas of the paper are cream-coloured where the reddish-brown pigment has been rubbed away. The leather has split vertically down the edge of the cover and also has cream covered areas where the top layer has rubbed or peeled off. The paper and leather are missing at the corners of the cover, exposing the brown board underneath.
Mss Eur E72 before treatment

As conservators our aim is always to retain as much original material as possible when carrying out treatment. My repairs to the marbled paper were very minimal. Using acrylic paints I toned a piece of Japanese handmade paper to a similar colour to that of the original, which I then used to fill in the gaps on the corners and edges of the boards. The damaged leather required a more interventive approach. After careful consideration I concluded that it was not possible to both keep the original leather and reinforce the binding structure. I therefore replaced the old leather with new green goatskin, but retained the old pieces so that readers can still access these remnants of the original binding. An additional result of this treatment will be that when Fishes of the Ganges returns from exhibition it will be robust enough to be consulted by readers and researchers without (hopefully) sustaining further damage.

The same hardcover book against a grey background after conservation treatment, photographed showing the front cover.  The old damaged leather is gone and the spine is covered in new, dark green leather. The exposed corner areas on the right-hand side of the cover have been covered with reddish-brown paper, a slightly lighter shade than the original.  The paper still has cream-coloured areas where the reddish-brown pigment has been rubbed away.
Mss Eur E72 after treatment

 

Veronica

The animal protagonist of a volume I treated for this exhibition is the horse. ‘The Anatomy of the Horse’, 1766, a printed book by the British painter George Stubbs, includes exquisite etchings engraved by Stubbs itself, which are anatomically accurate and elegant. The binding is a purple quarter leather binding with purple covering cloth on the sides of the boards and parchment reinforcement on the corners beneath the covering material. The leather spine is gold tooled with the author’s name, title and place and date of publication. The numerous plates in the text block were printed on thick laid paper.

The right page of the intended display opening, showing an incredibly detailed black and white full body anatomical drawing of a horse, with its head facing right and tail facing left. There are clear plate lines an inch or two away from each edge of the page, showing this image was printed from a plate. Small text at the top right corner, within these plate lines, reads, “Tab IV”. The top and fore-edge of the right board are visible, showing a dark maroon covering material, with gold tooling forming a thin line close to and parallel with the board edges. The covering material has detached from both board corners and the boards are delaminating, this damage is more pronounced in the top corner.
Tab IV. Exhibition opening page.

The binding was in poor state of condition, with both boards detached, delaminated and with missing areas, and the cloth and parchment covering materials on the corners considerably abraded. The leather was split along the spine edges and was heavily worn and coming unattached on the spine, with the grain layer flaking heavily, and some missing areas at head and tail on the endcaps, along the bands and along the edges. The gold tooling on the spine was partially missing.

The left board of a maroon cloth bound volume is partially visible; the fore-edge side of the board is out of frame, the spine edge in frame. The edges of the board are a slightly lighter colour, the covering material visibly detaching from the tail edge. The spine piece is heavily degraded, with the spine leather completely detached from the spine in places and the leather join split almost the length of the spine.
Left leather join split.
A maroon cloth bound volume lies flat on top a grey surface, showing the spine and the left board. The spine is visible in full, lying horizontally across the frame. The spine leather is heavily degraded, only small sections of dark leather can be seen, as the majority of the leather visible is a light brown and appears fluffy in texture. There are six separate spine sections, split by five raised bands, at least two of these raised bands have been lost completely, a further two are heavily abraded and damages and the final band is not visible due to the spine pieces on either side being so detached that they cover this area. The Spine pieces at the head and tail end have also come detached. There are two labels adhered to the head edge of the spine. There is gold lettering and tooling in every section on the spine. The other sections show design/emblems.
Highly degraded leather spine.

The conservation treatment started with the consolidation of the board corners, by reconstructing the missing areas with layers of Japanese paper adhered with a reversible adhesive. Next, we stabilised the parchment board corners with Japanese paper. The boards protected the text block again!

Once the treatment of the boards was completed, we proceeded with the removal of the old spine lining which was acidic and inflexible and caused the volume to not open well. For the lining removal, we used a poultice, locally applied to the spine to soften the lining materials and adhesives used in the past. The new spine lining, made of Japanese paper and aero-cotton, was strong and flexible and has the function to suitably support the text block spine during opening.

For the treatment of the highly degraded leather spine, together with the exhibition and loans manager and the departmental curator, we carefully evaluated the most suitable option.  Considering that the leather spine’s original state was already been lost and had no historic significance, we decided to apply a new leather spine on the book, gold tooled in the design of the original, and to keep the original pieces, consolidated, in a polyester pocket, secured into the box. With this solution, the volume could be safely displayed and handled, while as much as possible of its physical integrity was retained, with the original spine pieces available for research.

The leather reback on the spine was carried out with a goatskin leather that matched the colour and grain of the original one and was worked to the desired thickness. The treated book was finally housed in a phase box.

A maroon cloth bound volume lies flat on a grey surface. The entire left board is visible and the spine piece is partially visible. The covering material does not cover either of the board corners, which are white rather than maroon, though the corners are not bent or delaminating. Gold tooling of a thin gold line is visible along all edges of the left board, other than the board corners. A reddish brown leather covers the spine, with five raise bands visible along the spine. There is a slightly larger gap between the bottom band and the tail edge than there is between the top band and the head edge, with equal spacing between the raised bands.
Left board after treatment.

 

Old spine leather that has been removed from a volume, in six separate pieces, in a long thin melinex pocket. Each piece of leather is heavily degraded, some of the leather a darker brown but the majority a light brown. All sections of the spine have lost their original shape due to loss of leather. Gold letter is still visible on the second piece from the top, reading, “STUBBS ANATOMY OF THE HORSE”. Gold tooling is visible on all other sections. The top and bottom section show the emblem of a crown, whilst the other three sections show the same decorative emblem. The top section has two labels: a blue circular label reading, “460 f13” and a white rectangular label reading, “74/”.
The original consolidated leather spine is attached by means of Western handmade paper strips to a Melinex pocket sealed on all sides and to the box where the volume is housed.
A reddish brown leather spine piece lies on a grey surface. This spine contains five raised bands, which create six separate spine sections, each complete with gold tooling. A double gold line is at the top and bottom of each section, the top section also shows the emblem of a crown and a white rectangular label reading, “…”. The second to the top section contains gold lettering reading, “STUBBS ANATOMY OF THE HORSE”. The bottom section also depicts an emblem of a crown, and lettering reading, “74/460.f.13”. The other sections depict the same decorative emblem.
New leather spine with gold tooling.

Storm

Historia Aethiopica is a beautiful parchment bound volume I helped treat for display in the Animals: Art, Science and Sound exhibition. This volume included three foldout folios that protruded from the text block even when folded in resulting in heavy creases and weakened paper that had led to tears and areas of loss. I surfaced cleaned the display pages and other pages I treated which displayed surface dirt, to prevent moisture from any materials used in the treatment from causing the dirt to further bond to the surface and to improve the overall appearance of the object.

Volume lies open on conservator’s bench, surrounded by different size and shaped weights, clamps and other tools. The left board, together with the majority of the Textblock, is resting on a large triangular plastezote book rest. The right page is an oversized fold-out currently folded in, so the images are not shown in full, a tree is visible as well as the long tail of an animal. The right board and remainder of the Textblock are lying flat on the bench on top a layer of blotter and bondina. The top page on this side is an oversized folio that is folded out; the picture shows the verso but a large Zebra visibly fills the page. This folio is resting on a piece of mount board and bondina with three thick boards underneath right side so the page lies flat. Multiple thin Japanese strips are visible, these are tear repairs drying before the excess is trimmed. Two weights sit on top of a piece of mount board and bondina in the top right corner as an infill repair to the corner is drying under weights.
Verso of opening page during tear repair treatment

I repaired all tears and areas of loss on the display page, and other fold out pages, using toned Japanese tissue so the repairs were subtle and did not draw attention, and wheat starch adhesive, a reversible water-soluble adhesive.

The right page of the intended opening, a large fold-out folio depicting a black and white print of a large Zebra standing on a grassy area with two small trees on his left side and two larger trees on his right. There are clear plate lines showing this image was printing using a plate. Text above the zebra reads, “ZECORA QUADRUPES PULCHERRIMA / Lusitanis Buroodo Matto. Priscis / Oi Oaypr O., Asimus syloestris”, text in the top left corner reads, “Pag. 150. N.LXXIX”. All this text is within the plate lines. The page is noticeably dirty, has two small areas of loss along the right edge, one visible tear at the bottom edge in the centre and is noticeably dirty.
The display page pre-treatment
The same page depicted the black and white print of the Zebra is shown. However here it is noticeably cleaner, some of the heavier creases have been reduced, and the areas of loss and tears have been repaired.
The display page post-treatment

I used a heated spatula, with a barrier layer to protect the paper, to reduce some of the heavier creases and to flatten the corners as they were heavily curled. I also used the heated spatula in combination with some wheat starch adhesive to strengthen the edges of the page as they were extremely thin and weak, therefore were at a high risk of further deterioration.

A volume sits on a white surface, only the bottom right corner of the text block is in frame. Text is visible on the top page written in black ink and in Italian, the paper is slightly yellowed at the edges. A heated spatula is being applied to the bottom corner of this page, with a square of blotter beneath the page and a layer of bondina between the spatula and the page
Using a heated spatula to flatten a page’s corner

There was also damage to the binding, a tear at the top edge between the left board and the spine, which would likely have deteriorated further during exhibition, as it would be displayed open causing more stress to this area. I repaired this by inserting a piece of unbleached shirlan cotton adhered with a mixture of EVA and wheat starch adhesive to hold the board and spine together to reduce the risk of it tearing further whilst on display or during future handling.

Parchment bound volume lies on a layer of blotter covered with bondina. Only the top left corner of a the left board and top section of the spine is visible. There is black lettering on the spine, though only part of each word is visible: ‘..OLFI/ ..ariusin /…ICAM”. A piece of acid-free tissue is protruding from underneath the left board. The left board is covered in small scratches and there is a small split at the top edge between the left board and the spine piece. A small piece of white fabric is protruding from this split, having been inserted into the left board side and adhered in place.
The binding repair during treatment
The top left corner of a parchment bound volume is visible, showing the top left corner of the left board and the top section of the spine. The left board is covered in scratches and a small split is visible between the left board and the spine at the top edge, with the left board side of the split overlapping the spine piece.
Damage to binding
The top left corner of a parchment bound volume is visible, showing the top left corner fo the left board and the top section of the spine. The left board is covered in scratches. There is a small split visible but the parchment on either side of the split are almost touching with a small visible white gap between.
Binding repair

Both the head-edge endband and the tail-edge endband had also become almost completely detached from the text block, thus needed to be repaired. As I was unfamiliar with this type of treatment I closely observed as my mentor, Veronica Zoppi, undertook the treatment to the head-endband. This was incredibly educational as I was able to take photos and short videos of each treatment step whilst asking questions, which allowed me to make detailed notes complete with diagrams for future use and to treat the tail-edge endband.

First, I cleaned the endband and spine edge of the textblock using Konjac and Xantham gel, to improve the appearance of the endband but also so the repair materials would adhere properly.

A hollow-back parchment bound volume stands upright on a conservation bench on top of a piece of blotting paper. The volume is opened at roughly the centre, fairly wide, exposing the hollow. A green and white endband is visibly detached from the text block, there is a thin strip of the text block closest to the spine much lighter in colour than the rest, where the endband would have once covered. The endband is lying flat across the hollow, it is attached the volume on the right side but the left side of the endband is detached and the central core is visible. There is gel covering the endband.
Endband with gel on during cleaning

The endband was then fixed in the right position using a strip of Japanese tissue adhered to the bottom edge of the endband and to the spine of the Textblock, this was then left to dry shut.

A parchment bound volume lies closed on a piece of blotter and bondina. Only the spine side of the head edge is visible. A green and cream sewn endband follows the curvature of the spine. There is a small piece of bondina and a small piece of melinex protruding from between the text block and the spine.
Japanese tissue holding endband in position drying

To reattach the endband, I sewed through the text block, around the endband core, passing again through the centre of some sections in the text block, marked by paper markers. Usually when re-attaching endbands a conservator would have access to the spine of the text-block, as the spine piece would have been partially or completely detached. As this was not the case, to allow access to the spine, the volume was held open with weights, and then a curved needle was used to reattach the endband using linen threads that closely matched the original endband colours.

A thick volume is held standing on a conservation bench, on top of a layer of blotter and bondina. Only the head edge of the volume is visible, with the fore-edge out of frame but the endband and spine edge visible. Six paper markers spaced approximately evenly throughout the text block, protrude slightly from the head edge.
Section markers
The head-edge of a parchment bound volume is partially visible, with the fore-edge side and the majority of the head-edge of the volume out of frame. A green and cream endband is visible with a clear gap between this endband and the text block and another gap between the endband and the spine.
The endband pre-treatment
The head-edge of a parchment bound volume is partially visible, with the fore-edge side and the majority of the head-edge of the volume out of frame. A green and cream endband is visible, the endband touches the text block at the very left edge, but a small gap is visible between the endband and the text block, this gap widens from the centre to the right side. There are three very thin threads visible in this gap; this is the repair stitching holding the endband in place.
The endband post-treatment

Conclusion

We hope you’ve enjoyed this glimpse into preparing items for display. All items are now on view in the exhibition. Book your tickets here.

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