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THE OEGANISM IS A BACILLUS. 



THE GELATINE IS LIQUEFIED. 



THE OEGANISM IS MOTILE AND NON-CHROMOGENIC. 



THE COLONIES HAVE A BEANCHED AREANGEMENT. 



Bacillus subtilis, from hay, water, air, soil, etc. ; bacilli 4 to 6 /i in 

 length, 2 /* in breadth, actively motile, with a terminal flagellum 

 at each end; liquefies blood serum and forms a characteristic 

 wrinkled layer on agar ; forms oval spores in the centre of the 

 rods. 



Bacillus ramosus, from soil and water ; very common ; resembles 

 subtilis, but thicker ; slightly motUe ; forms oval spores in the 

 centre of the rods. , 



Bacillus mycoides, common in soil and water ; bacilli 1-6 to 2 ai long; 

 usually in long filaments ; sporulation well marked. 



Bacillus of tetanus, from cases of tetanus and from superficial garden 

 soil; obtained in pure cultures by Kitasato, 1889; slender 

 straight bacilU, with round ends, often in filaments ; spores are 

 developed at one end of the organism, giving it the characteristic 

 breast-pin appearance; is distinctly anaerobic; will not grow 

 below 14° C. The colonies at first resemble those of BaoUlus 

 subtOis, but the liquefaction is much slower ; a small amount of 

 gas is formed during liquefaction. 



BaciUus of Scheurlen, from cancerous tissue and from the scales of 

 epidermis round the nipple on the healthy mammse ; bacilli 

 1 to 2 /i long, forming long oval spores. 



Bacillus vermiculosis, from water; bacilli 1-5 /i long, with rounded 

 ends ; grows very slowly at room temperature. 



Bacillus pestifer (Frankland), from air ; bacilli 2-3 yu. long, with 

 rounded ends, often growing into filaments. 



Bacillus nubilus (Frankland), from London water ; baciUi 3 n long, 

 in chains ; on the third day colonies show as a network of inter- 

 lacing filaments. 



Bacillus albus putidus, small bacilli, growing in filaments ; forms 

 small round colonies, which have a faint brown tinge, and 

 are surrounded by a clear ring, growing rapidly at ordinary 

 temperature. 



