| Description | Docket reads : Answ[ere]d 21st April. Pencil diagram on address side of letter. [Partial success of nitric acid in place of mercury for treatment of syphilis. Health — back problems, colds, stomach ailments. Gregory is in Cornwall improving his health and knowledge of the business. Diet. Comparison of quantities of rainfall.]. (Partners no. 190). Enclosing MS 3219/4/127/55b |