BACILLUS MULTIPEDICULUS. 401 



in milk in a similar manner to rennet, and cover the 

 coagula, which are again gradually but almost entirely 

 dissolved, with a thick tenacious envelope. 



Bacillus liodermos.* 



These are small, short bacilli, with rounded ends, and Potato 

 with very active movement. They form on gelatine ^g\ smooth 1 " 

 plates colonies with irregular outlines which float on skin - 

 the surface of the liquefied gelatine in the form of 

 small white flakes. In puncture cultivations liquefaction 

 occurs in the whole of the upper zone, and at the bottom 

 of the fluid greyish-yellow flocks are deposited ; in the 

 lower part of the track of the needle there is a greyish 

 growth. On potatoes a smooth, shining layer is formed, 

 which spreads rapidly over the whole surface, and gives 

 to it an appearance as if it had been painted over with 

 yellowish-white syrup. It is not till after several days 

 that the smooth surface becomes opaque and slightly 

 wrinkled, but in any case the wrinkles which are formed 

 are never so marked as in the foregoing species. 



Bacillus multipediculus.-\- 



These are long thin non-motile bacilli. The colonies Bacillus with 

 on gelatine plates present under a low power the appear- ini pct-iike 

 ance of round or oval, sharply outlined, dark discs, from 

 the periphery of which small, relatively broad processes 

 shoot out in various places ; these processes are jointed, 

 consisting of round balls arranged in rows, and gradually 

 becoming smaller, and they have usually a radiating 

 direction ; at times, however, they curve, and present a 

 concentric arrangement. After 2 or 3 days these pro- 

 cesses are visible to the naked eye in the superficial oval 

 white colonies ; as these processes only occur here and 

 there, and are usually only in considerable numbers at 

 one of the pointed ends, the colony recalls the form of an 

 insect with numerous feet and antennae. In puncture 



* Gottinger hyg. Institut. f Gottinger hyg. Institut. 



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