212 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



acacia dissolved in a small quantity of water ; after which the mixture 

 is boiled, filtered, placed in test-tubes, and sterilised. The water was 

 allowed to flow from the tap for half an hour upon a sterilised watch- 



Fir,. 32. 



Fig. 33. 



15 Ipijiippi Ufas 



s E-^tB 



glass supported upon a tripod. From the watch-glass the water was 

 taken up into a sterilised graduated pipette and added to the previously 

 melteil and cooled gelatin (30° 0.) or agar (42° C). The tube was then 



