352 The Microscope. 



EXCHANGES 



This department is for the benefit of subscribers who have microscopical apparatus, 

 material or books ivhich they wish to exchange, and sicch rvants will be inserted free of 

 CHARGE. The number of insertions given 7Vill depend upon the number of exchanges 

 received each month. Subscribers will please notify us when articles have been exchanged 

 or sold. Dealers are referred to our advertising department. 



MOUNTS OF SA.L1CINE, PURE UREA, AND OTHER CRYSALS, by an entirely new 

 process, and the most beautiful ever seen, in exchange for strictly flrst-class patho- 

 logical slides only, or for sale. FRANK L. JAMES, M.D., Box .568, St. Louis, Mo. 



ANTED— A microscopical slide cabinet containing about one thousand objects. Must 

 be in good condition. Send description, price, etc., to 



JAMES B. SHEARER, Bay City, Mich. 



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OOD histological or pathological mounts for other first -clas-s mounts. 



S. G. SHANKS, M. D., 547 Clinton Ave., Albany, N. Y. 



FOR SALE— Beck Popular Binocular with complete outfit, 2-in., 1-in. and J^ ob. polari- 

 scope, parabola, double nose-piece, 3 sets eye-pieces, etc., in perfect order, only 

 tarnished. Price, $80. Address WM. H. SEAMAN, Patent Office, Washington, D. C. 



WANTED— B. eye-piece (to fit Bausch & Lomb's smaller stands), a camera lucida, a stage 

 micrometer (metric preferred) and a good turn-table; also Carpenter, or Beale, on 

 the Microscope. Will exchange for above, books on Mineralogy and Chemistry and genera 

 literary works. Correspondence solicited. A. F. BARNARD, Box 152, Oberlin, O. 



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XCHANGE— I have well mounted shdes of diatoms, also diatomaceous material which 

 I offer for curiosities or materials suitable for a cabinet. 



F. L. CAUCH, Carpentaria, Santa Barbara Co., Cal. 



LABELS for slides; also, slides and material. 

 EUGENE PINCKNEY, Dixon, 111. 



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XCHANGE.— Will exchange slides of vegetable sections, double-stained, for other good 

 slides, preferably of the same nature. 



CHAS. E. BARR, 301 Clinton St., Cleveland, O. 



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ANTED— standard books on Rotifera, Infusoria, Diatoms, Algae, etc. Will exchange 

 general and scientific works for the above. 



JAMES E. WHITNE i , Rochester, N. Y. 



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OR EXCHANGE— Diatomaceous earth from Los Angeles, for good mounts. 



M. H. ALTER, M. D., 41 South Spring St.. Los Angeles, Cal. 



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OR EXCHANGE OR SALE— Double-stained Bacillus Tuberculosis slides. V 

 exchange for histological or pathological mounts. 



F. T. MERIWETHER, M. D., Asheville, North Carolina. 



FOR EXCHANGE.— I have for exchange for mounted slides specimens of crystallized 

 quartz, microscopic and small, perfect crystals, crystals from one-half to three inches 

 in diameter, crystals containing floating particles, crystals containing cavities, and some 

 containing hornblende. State which you prefer, and 1 will endeavor to give satisfaction. 



D. M. FULLER, 154 Hamilton St., Albany, N. Y. 



