618 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



mixture of paraffin and vaselin. The siphon is started by blowing 

 through the tube d. Once started the flask is inclined in the direction 

 opposite the outlet, when the fluid will run back into the tube b. The 

 level of the fluid in o will be the same as in A. The end of c is then 

 sealed as well as the end of d. To pour out the medium, the end of c, 

 after careful flaming, is broken off at one of the narrowed points, and the 

 flask inclined in the direction of c. The rapidity of the flow can be 

 made to vary from a drop to a stream according to the inclination of 

 the flask. Hence this flask is suitable not only for storage purposes, 

 but may be used as a dropping-bottle or used in the bacteriological 

 examination of water when fractions of a cubic centimetre are required. 



^S\ 



Fig. 122. 



New Method of Cultivating Tetanus Bacillus.* — L. Debrand, who 

 had previously demonstrated the identity of the toxin produced in 

 anaerobic cultures of the tetanus bacillus and the toxin found in air- 

 cultures of JB. tetanus associated with JB. subtilis, has recently made ex- 

 periments which tend to show that with the toxin obtained from the 

 symbiosis of these bacilli cultivated aerobically there can be produced 

 a serum just as active as with the toxin raised by the ordinary methods. 

 This new cultivation method may replace the old procedure for pre- 

 paring anti-tetanus serum. 



Cultivation of Nitrite-formers on Paper Disks.f — W. Omelianski 

 sews numerous pieces of filter paper together and fits them in the bottom 



* Ann. Inst. Pasteur, xvi. (1902) pp. 427-32. 



t Centralbl. Bakt., l t0 Abt., xxxi. (1902) pp. 785-7 (1 pi). 



