LABORATORY AND GREENHOUSE STUDIES. 



95 



Table XIX. — Coconut cultures Nos. 1 to 6 and Bacillus coli in litmus milk with calcium 



carbonate, at 37° C, May 21 to June 6, 1910. 



Table XX. — Coconut cultures Nos. 1 to 6 and Bacillus coli in plain sterile milk with 

 calcium carbonate, at 37°C., May 27 to June 6, 1910. 



From these experiments it will be seen in the first place that the 

 CaCOg did not entirel}^ prevent the acid from producing an effect on 

 the litmus, i. e., reddening it. Consequently, the curd produced 

 may have been the result of this acid. "When the ammonia was 

 added it appeared to have no determinate immediate effect. The 

 curd was finally broken up by means of a glass rod and thoroughly 

 mixed with the ammonia. The broken fragments of curd showed no 

 sign of immediate disappearance; but after the tubes were allowed 

 to stand for three days there were no signs whatever of the curd in 

 certain tubes 



228 



These cultures were diluted and strained through a 



