REED AND CARROLL'S REPLY TO SANARELLI.

As foretold in our editorial on "The Microbes of Yellow Fever¹," Sanarelli's remarkable attack on the bacteriologic technic of Reed and Carroll, who are stated to have claimed the close relationship of the bacillus icteroides to the bacillus of hog-cholera because of "some deplorable neglect of technical precautions in the laboratory;" did not long remain unanswered. In the Medical News of September 9, Drs. Reed and Carroll, fearing that silence on their part might be construed by the general medical public as an admission that they had followed faulty technical methods in their work, make a vigorous and, it seems to us, wholly successful defense of their methods in the investigation which led them to announce the rather startling view that the bacillus icteroides should be regarded as a variety of the hog-cholera bacillus. Reed and Carroll express full willingness to acknowledge that the cultures of two microorganisms might become