210 



THE ROYAL SOCIETY OF CANADA 



These 17 organisms were tested to ascertain the optimum tem- 

 perature for their development, with the following results: — 



XXX abundant; xx moderate; x slight. 



Except 293 all organisms grew better at the temperature of 

 24°C. and a number grew well below 14°C. 



A record has been kept of the source of the milk from which the 

 different organisms were obtained and this record is given in the 

 following tables, also the appearance of the original colony isolated. 



