384 The Microscope. 



EXCHANGES 



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

 material or books which they wish to exchange, arul such wants will be inserted free of 

 CHARGE. The number of insertions given will depend upon the number of exchanges 

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

 or told. Dealers are referred to our advertising department. 



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UBES OF CLEANED DIATOMS, in exchange for mounted slides or good material. 

 For list, etc., address A. B. ADBERT, Orono, Penobscot Co., Maine. 



FOR EXCHANGE.— Slides of vegetable and animal sections, all double-stained, new- 

 process, for hair of full-blooded Indian, elephant's beard and tail, trichina meat, and 

 well-mounted shdes. J. D. BECK, 305 Church St., Williamsport, Pa. 



FOR EXCHANGE.— One dozen well-mounted histological and pathological sections. 

 Will exchange for some recent-edition book on histology or pathology. Address 



L. G. WILLE, Avoyelles Parish, Marksville, La. 



MOUNTS OF SALICINE, PURE UREA, AND OTHER CRYSTALS, by an entirely new 

 process, and the most beautiful ever seen, in exchange for strictly first-clasa 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 flrst-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 }i ob. polari- 

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

 tarnished. Price, SfbO. Address WM. H. SEAMAN, Patent Offlce.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 general 

 literary works. Correspondence solicited. A. F. BARNARD, Box 153, Oberlin, O. 



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XCHANGE.— I have well-mounted slides 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, lU. 



EXCHANGE.— 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, AJgse, etc. Will exchange 

 general and scientific works for the above. 



JAMES E. WHITNEY, 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. Will 

 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. 



"ANTED— Diatomaceous earth from Mejillancs, Bolivia, South America ; can give In 

 exchange either Diatomaceous earth from Zamara, New Zealand, or cash. 



E. MICHALEK, I. Fleischmarkt, No. 1, Wien, Austria, 



