superintendent of the ordnance laboratories of the Southern States.

After peace had been established Mallet became professor of chemistry in the medical department of the University of Louisiana. The appointment was the outcome of a mission which he undertook on behalf of some Northern financiers, to search for petroleum in this southern state. The result of the appointment was to direct his attention to medicine, in which he gained the degree of M.D. in 1868. In that year he was called to the