44 THE MICROSCOPE. Mar. 



THE MICROSCOPE. 



New Series, 1893. 



For Naturalists, Physicians, and Drug-gists, and Designed to Popularize 



Microscopy. 



Published mottthly. Price -$1.00 per annu7n. Subscriptions should end 

 with the year. The old series, consisting of 12 volumes {i88i-i8g2), ended 

 with December, j8g2. Sets of the old series cannot be furnished. All 

 correspojidence, exchanges, atid books for tiotice should be addressed to the 

 Microscopical Publishing Co., Washington, D. C, U. S. A. 



CHARLES W. SMILEY, A. M., EDITOR. 



EDITORIAL. 



Transmitting Slides. — The tin-boxes in which the type- 

 writer ribbons are packed are 3i long by 1* inches wide and 

 make most excellent boxes in which to transmit slides. There 

 is just room enough to insert the slides wrapped in cotton or in 

 blotting paper and no damage can be done by the mailing or 

 by the pressure to which packages are sul)jected in mail bags. 

 This is of especial importance when slides are sent across the 

 ocean. 



QUESTIONS ANSWERED. 



NoTB. — Dr. S. G. Shanks, of Albany, N. Y., kindly consents to receive all sorts of ques- 

 tions relating to microscopy , whether asked by professionals or auintiurs I'ei sons of au 

 fades of experience, from the beginner upward, are 7velcovie to the benifits f this depa*-*- 

 ment. The questions are numbered for future ? eference. 



189. How would you proceed to make a microscopical examina- 

 tion of urine suspected to contain spermatozoa f — C. S. C. 



Pour the urine into a narrow-bottomed wine-glass or similar 

 vessel ; let it stand several hours, until the spermatozoa etc., have 

 fallen to the bottom of the liquid. Remove acme of the deposit 

 with a pipette, place a drop on a glass slip and apply a cover 

 glass. Use a k inch or 1-5 inch objective. U too much liquid 

 be placed on the slip, the cover glass will slide about too freely. 

 Then apply a small piece of blotting paper to the edge of the 



