Letter from Michael Thomas Yarr, Deputy Director, Medical Services, 8th Corps, Mediterranean Expeditionary Force to Ross Introduces himself, he has seen Ross' instructions on the use of emetine for dysentery and describes typhoid symptoms in patients with bowel complaints which are not sent to Alexandria, in his own case he did not treat them and they persisted for seven weeks. There have also been cases of sandfly fever 23/8/1915