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IN 1878, during his investigations upon the infectious
traumatic diseases, Koch observed that when a minute
amount of putrid blood or of meat-infusion was injected
into mice the animals died of a septicemia caused by the
multiplication in their blood of a minute bacillus to
which he gave the name u Bacillus der Mausesepticamie"
FIG. 117.—Bacillus of mouse-septiceinia, from the blood of a mouse; x 1000
(Frankel and Pfeiffer).
In 1885 the bacillus was again brought into promi-
nence by Loffler and Schiitz, who found a very similar,