114 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



I p.c. osmic acid. After shaking for 10 minutes the mixture is centric 

 fuged, and the deposit mixed with 5 volumes of 25 p.c. Beale's carmin 

 solution. After half-an-hour this is again centrifuged, and the deposit 

 washed in a weak solution of the same carmin and mounted on 

 glycerin, or dehydrated and mounted on balsam. (2) Doflein's methods. 

 This writer suggests fixation of the material in one of the following 

 solutions : A. Saturated aqueous solution of sublimate 100 parts, 

 alcohol 50 parts, acetic acid 5 parts. B. Picric acid 2 parts, alcohol 

 50 parts, acetic acid 5 parts. 



Uoflein makes a film of the protozoa on a slide, or handles them in 

 bulk imbedded in paraffin, and treated as sections. 



Stuler — New methods for anaerobic cultures and anaero-cultures. 



Centralbl. Bakt., 1* Abt., xxxvii. (1904) pp. 298-307. 



(3). Cutting-, including- Imbedding- and Microtomes. 



New Imbedding Bath.* — The imbedding bath recently brought 

 out by the Cambridge Scientific Instrument Company is similar to the 





Fig. 30. 



gas-heated baths made by the -same I firm, in which a gas regulator is 

 operated by the expansion of mercury, so as to maintain a constant 



* Cambridge Scientific Instrument Compony, Special Catalogue, 1904. 



