592 NOTES AND EXHIBITS. 



every respect, excepting with regard to the growth on gelatine, 

 upon which one of them grows as a flat, the other as a slightly 

 raised film. Neither individually ferments saccharose, but a 

 mixed culture is capable of doing so. He also showed two 

 household spongeSj one of which had been infected with a slime- 

 forming bacterium originally obtained from a slimy sponge. The 

 infected sponge was very slimy, and had considerably contracted 

 and lost its elastic character. The control-sponge kept under 

 the same conditions was normal. 



[Printed off December 1st, 1909.] 



