326 



Journal of Agricultural Research 



Vol. XVI, No. 12 



Table VIII. — Comparison between numbers of Bacillus cereus and the num,hers of 

 certain non-spore formers in Plot I, soil untreated 



[Count indicates the number of colonies per gram of soil] 



1912 



Sept. 23 



Oct. 25 



Dec. 3 



17 



1913 



Jan. 15 



Feb. 5 



14 



Mar. II 



Apr. 4 



July 10 



Nov. 26 



Dec. 15 



1914 

 Jan. 16 



^ 30 



Feb. 7 



26 



Apr. IS 



29 



Aug. 7 



19 



1917 

 May 4 



Total count. 



38, 250, 000 

 17, 000, 000 

 35, 000, 000 

 23, 500, 000 



Bacillus 



cereus. 



17. 500. 

 27, 500, 

 54, 000, 

 29, 200, 

 27, 000, 

 22, 600, 

 15, 000, 

 12, 400, 



000 

 000 

 000 

 000 

 000 

 000 

 000 

 000 



16, 150, 000 

 29, 300, 000 



26, 7CX), 000 



38, 500, 000 

 19, 400, 000 

 16, 100, 000 



(^) 

 23, 400, 000 



12, 500, 000 



350, 000 

 150, 000 

 200, 000 



No count. 



200, 000 

 350, 000 

 300, 000 

 400, 000 

 400, 000 

 5CX), 000 

 350, 000 

 200, 000 



700, 000 

 500, 000 

 400, 000 

 600, 000 

 350,000 

 450, 000 

 200, 000 

 175,000 



300, 000 



Pseudomon as 

 fluorescens 



o None. 



1 50, 000 



None. 



No count. 



100, 000 



None. 

 300, 000 



None. 

 200, 000 



None. 



None. 



Trace. 



None. 

 Trace. 

 None. 

 Trace. 

 None. 

 None. 

 None. 

 600, 000 



2 50, 000 



Pseudomonas 

 caudatus. 



60, 000 



None. 



None. 



No count. 



None. 

 None. 

 None. 

 None. 

 None. 

 None. 

 None. 

 None. 



None. 

 None. 

 None. 

 None. 

 None. 

 None. 

 None. 

 None. 



None. 



o Dilution so great that no colonies appeared on the plates. b Count lost on account of liquefaction. 



Table IX. — Comparison between numbers of Bacillus cereus and numbers of certain 

 non-spore formers in soil from, Plot I. Soil manured and kept in the laboratory. 

 Series I 



[Coimts indicate number of colonies per gram of soil) 



a Bacillus cereus did not develop on the plates. 



