Letter from Leonard Rogers to Ross on using cinchonine bi-hydrochloride in malaria treatment Sir L. Rogers says that he has been using cinchonine bi-hydrochloride in the treatment of malaria which is greatly preferred by the patients and wishes that he could have seen the war office publication on malaria before revising his fevers in the tropics. He adds that he encloses reprints of his article on sodium morrhuate in tuberculosis (Ross/173/29/223) and is finding this treatment ''very promising''. He also says that his new extension at the Calcutta School of Tropical Medicine has been approved. 19/3/1919