1894.] MICROSCOPICAL JOURNAL. 91 



opposite side of the coverslip. Be careful that these living and 

 freely swimming animals are not swept out from under the 

 cover glass by the current before the reagent has reached them. 

 This may be done by drawing the reagent half through and then 

 putting another drop on the other side of the cover-glass and 

 drawing it back again. "When the reagent reaches them it both 

 kills them and sticks them to the slide, after which the rapid 

 currents will not move them. After the reagent has acted a few 

 minutes, it is washed out with water, drawn through by means 

 of filter paper. When well washed run in the stain (alum car- 

 mine or carm-alum). .Let this stand an hour in a damp cham- 

 ber (to prevent evaporation) and then wash with watqr, bring 

 up through the alcohols into oil of cloves and finally into bal- 

 sam. This method preserves cilia, undulating membranes, 

 etc., and gives good results for the nucleus and internal protop- 

 lasmic scructures. — E. A. Minchin in Natural Science. 



MEDICAL MICROSCOPY. 



Cauterizing wounds. — A. E. Baldwin takes a 5 inch sun- 

 glass, brings it to a i inch white focus upon the wound. The 

 parts to be burned are first shaved and cleansed with a 1-10,000 

 solution of corrosive sublimate. The application is for 2 to 2i 

 minutes. There is no bleeding. Its use upon boils is very sat- 

 isfactory and completely aborts them. It cures hemorrhages 

 and glanders. 



Amoebae were found by Posner (Berlin. Klin. Woch.) to be 

 the cause of a case of haematuria. The amoebse are described 

 as masses of granular protoplasm ten times as large as colorless 

 blood corpuscles. 



BACTERIOLOGY. 



Gunther's Bacteriology.— Dr. Carl Gunther has just pub- 

 lished at Leipzig, a new edition of his text book on bacteriology, 

 the first edition having appeared in 1890, the second in 1893 and 

 the third in 1894. 



In the description of the cholera comma bacillus has been 

 added a large amount of fresh material. Methods of isolation 



