506 C. A. LAUBACH, J. L. RICE AND W. W. FORD 



Bacillus cereus Frankland 93 



Bacillus subtilis (Ehrenberg) Cohn 84 



Bacillus vulgalus (Flijgge) Migula 45 



(Bacillus mesentericus vulgatus FliJgge.) 



Bacillus mycoides FliJgge 41 



Bacillus megatherium De Bary 14 



Bacillus mesentericus (Fliigge) Migula 12 



{Bacillus mesentericus fuscus Fliigge). 



Bacillus petasites Gottheil 8 



Bacillus aterrimus Lehmann & Neumann 7 



(Bacillus mesentericus niger Lunt.) 



Bacillus fusiformis Gottheil 2 



Bacillus brevis Migula 2 



Bacillus prausnitzii Trevisan 1 



(Bacillus ramosus liquefaciens Prausnitz.) 



Bacillus ruminatus Gottheil 1 



In addition to the above types one organism was found which 

 had not thus far been isolated in our laboratory but which was 

 described originally by Chester as a viscous variety of Bacillus 

 subtilis. Another sporulating organism new to us, producing a 

 green pigment, was found on one occasion. An attempt was 

 made to identify this as one of the numerous fluorescent sporu- 

 lating organisms already described in water but the morphology 

 and cultural reactions were quite the same as those of Bacillus 

 cereus and it was therefore decided to regard it as a fluorescent 

 variety of this species. It has subsequently been isolated on a 

 number of occasions. An organism was encountered on one in- 

 stance which had such peculiar properties as to merit description 

 as a new species. Therefore the following may be added to the 

 above list. 



Bacillus subtilis var viscosus Chester 1 



Bacillus cereus var fluorescens nov. var 1 



BACILLUS LATEROSPORUS nOV. Sp 1 



Bacillus subtilis variety viscosus Chester 1903 



Attention was first called to this organism by Chester (1903). 

 We have encountered it but once, in water. 



Morphology. Homogeneous rods with round and flat ends 

 measuring 0.5 to 0.625 by 1.5 to 4 microns in young cultures on 

 plain agar. No change in morphology on glucose agar. Trans- 



