This bookmark came into my collection via a bulk lot of bookmarks I purchased on eBay.
Catgut suture was once a widely used material in surgical settings, but it has now largely been replaced by synthetic absorbable polymers. Catgut sutures remain in use in developing countries where they are locally less expensive and easier to obtain.
Outside surgical settings, for a long time, catgut was the most common material for the strings of harps, lutes, violins, violas, cellos, and double basses, and other stringed musical instruments, as well as older snare drums.
The London Hospital was founded in September 1740 and was originally named the London Infirmary. The name changed to the London Hospital in 1748, and in 1990 to the Royal London Hospital, which remains its current name.