Jar of Catgut Sutures Glass jar containing three spools of catgut sutures, two of which are empty. Paper label within jar reads "MERSONS STERILIZED/SURGICAL SUTURE (CATGUT)/NON-BOILABLE PLAIN/T. 8 .(M) 4. EJ 3158/G.F. Merson Ltd., Edinburgh, Scotland/012/10 feet approx. each reel". Base of jar is marked with either the letter "M" or "W", which is within a rectangle. [1900-1949]