1896.] MICROSCOPICAL JOURNAL. 183 



are kept free from stains and acids. 5. The edg-e of only 

 cover-g-lass beings grasped and held by forceps, admits of 

 the whole surface of the cover-g-lass being- stained. 6. Cov- 

 er-g-lass can be drained by placing- forceps on the side. 



These cover-glass forceps are maufactured and sold by 

 Chas. Truax, Green and Co.," of Chicag-o. Every pair of 

 forceps, if properly made, possesses the above mentioned 

 advantages over the clumsy forceps formerly used. — Jour- 

 nal of American Medical Association. 



MICROSCOPICAL MANIPULATION. 



New Method of Preparing Culture Media. — The atten- 

 tion of all bacteriologists is earnestly invited to the follow- 

 ing- method, which we sincerely recommend: 



Dr. J. Lorrain Smith points out the difficulty bacteriol- 

 og-ists have to contend with in the fact that the composi- 

 tion of many of the media used for cultivations of patho- 

 genic microbes differ so widely from that of the blood and 

 other fluids found in the animal tissues. He describes a 

 method by which media can be prepared directly from 

 these fluids by a process which reduces the difficulties of 

 manipulation to a minimum. 



Break up the white of a hen's eg-g- with an eg-g--beater till 

 it loses its consistency; add 40 per cent of water and mix 

 well; pass the mixture through muslin to remove any 

 shreds of insoluble material; add 0. 1 per cent of caustic 

 soda, and solidify in the autoclave. With a little care in 

 clearing- it a jelly of eg-g--white can be obtained which closely 

 resembles g-elatin in consistency. Substances like g-lucose 

 can be added if desired. 



A large variety of bacteria have been found to g-row on 

 this medium with readiness. — Lang-sdale's Lancet. 



Simplifying the Examination for Tubercle Bacilli. — - 

 Prof. Rindfleisch states (Deutsche Med. Woch.) that tub- 

 ercle bacilli are found in greatest number in theliquid, and 

 not in masses of mucus of the sputum, and recommends 

 the following- method for their detection: Dip a camel's 



