Investigations commisioned by J.Wrench Towse.[Clerk] on behalf of The Worshipful Company of Fishmongers, London and carried out by Professor Klein in order to ascertain the vitality of the typhoid bacillus and other sewage microbes in oysters,cockles,and mussels. Original publishers cloth 8vo 79 pps. 3 plates. Cloth somewhat stained but generally a clean sound copy and emphatically NOT ex lib.