Written and illustrated by Jean Baptiste Audebert, this large, 19th century French book includes 63 full-page engravings of beautifully represented monkeys and lemurs. The book recently arrived at the Wren Library as part of the Crewe collection, bequeathed by Mary Innes-Ker, Duchess of Roxburghe to Trinity College. The binding was in fairly poor condition and handling of the book risked further damage. Conservation treatment was requested by the Librarian.
The leather spine had fallen into pieces and the remaining leather and the covering marbled paper on the boards were both scratched and torn, especially along the edges. The boards were still attached to the text-block by the laced-in cords ; however, the missing leather along the joints and torn inside hinges made the attachment vulnerable.
The text-block was wavy and dirty along the top edges and several pages had large water stains.
The conservation treatment, which took place at the Fitzwilliam Museum’s Book and Manuscript Conservation Workshop, aimed to restore the accessibility of the book while considering its historical and aesthetical values.
Firstly, the entire text-block was dry cleaned using a smoke-sponge. The two title pages were removed from the book and washed in warm de-ionised water. They were then left to dry under weight.
The visually disturbing water stains that covered some engravings were reduced by humidifying the stain edge and drying it immediately with a heated spatula through filter paper to avoid spreading the discolouration and distorting the paper.
The worn and delaminated vellum corners were repaired with new toned vellum and wheat-starch paste. The vellum was previously lined with paper which allows the piece of vellum to be moulded easily around the corner.
After removing the spine linings and any old adhesives, the spine was pasted, re-shaped slightly and lined with a strip of Japanese paper to consolidate the sewing. The board attachment was strengthened with a strip of aerolinen adhered onto the spine and extending onto the boards. The two title pages were then re-attached to the text-block by sewing them through the aerolinen.
New back-bead headbands were made with linen threads to reinforce the sewing structure.
A hollow back made of Heritage Archival paper was adhered to the spine and the book was re-backed with a piece of calf leather toned to match the remaining leather on the boards. Finally, the original leather label was pasted onto the spine and gold lines were tooled to imitate the original spine.
And finally, some full page images from the conserved book:
With thanks to Gwendoline Lemée.