14 
fluorescens. ~Ps. myae and Ps. sp? formed an acid curd, followed by digestion 
of casein, in milk. 
Ps. Jaegeri was the only gas former among the blackening organisms isolated. 
~ NOTE OF THANKS. 
The writer of this paper wishes to express her thanks to Dr. Harrison, who 
outlined the problem and made many helpful suggestions; to Dr. Huntsman, 
under whose direction the work was begun; to Professor Lloyd, whose practical 
interest has been a constant encouragement; to Dr. Oertel, who allowed her the 
facilities of his department; and, finally, to Professor Derick, whose unfailing 
interest has been an inspiration and whose practical suggestions have been of 
great value. 
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