... are uncertain, for there may be no interval whatever —the fever may begin immediately on the receipt of the poison. In the typhoid the period of incubation is probably about a week, and the source of the fatal poison must have been at some place where the ...

... Diseases; of paper On the Specific Cause of Typhoid, Typhus, and Relapsing Fevers, printed in the Medico-Chirurgical Society's Transactions for 1850; of essays On the Identity or Non-Identity of Typhus and Typhoid Fevers (1850); On the Diseases commonly ...