160 The Microscope. 



EXCHANGES. 



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

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

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

 received each month. Subscribers ivill please notify us lohen articles have been exchanged 

 or sold. Dealers are referred to our advertising department. 



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OR SALE— A ToUes 1-12 in. objective, a very fine lense and practically new, having 

 been used only a few times. Cost $100, and will be sold for fOO. 



Address, E. K. BAXTER, Sharon, Vt. 



LIDES FOR EXCHANGE— Peristomes of Moss and Diatoms, for miscellaneous mounts 

 and material. Address, Dr. E. D. BONDURANT, Tuskaloosa, Ala. 



FOR SALE OR EXCHANGE— Vols. I to VI inclusive, of Phin's American Journal of 

 Microscopy, vols. 1 and II bound, price, $4.00. Wanted Laugley's The New Astronomy 

 Slides. E. CROCKER, Berea, Cuyahoga Co , Ohio. 



PECIMENS OF UTAH ROCKS AND MINERALS; also natural deposits from the 

 mineral lakes and springs of Utah and Idaho, in exchange for good mounts. 



Address, PROF. J. E. TALMAGE, P. O. Box 75, Prove City, Utah. 



WILL EXCHANGE COLE'S STUDIES IN PATHOLOGICAL HISTOLOGY, Vol. Ill, 

 for Cole's Studies in Animal Histology. Vol. II or IV. I offer full text and 12 slides and 

 desire the same in exchange. 



A. B. AUBERT, Maine State College, Orono, Maine. 



OR SALE— A Bausch & Lomb "Professional" Microscope, complete, nearly new. 



Catalogue No. 561; list price, $185.00. Best offer wanted ■• 



J. H. SMITH, M. D., 909 S. Charles St., Baltimore, Md. 



FOR EXCHANGE— Synopsis of the Diatoms of Belgium, by Dr. Van Henrck, 133 plates 

 unbound. Will sell, or exchange for an Abbe Condenser, or a good laboratory micro- 

 tome and pay difference in cost. F. J. SCHAUFELBERGER, M. D., Hastings, Neb. 



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OR SALE— Slide of Bacillus Tuberculosis (from Sputum) single and double-stained. 

 Address, WM. B. CANFIELD, M. D., 1010 N. Charles St., Baltimore, Md. 



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ANTED TO PURCHASE— Second-hand copies in good condition of Rev. Wm. Smith's 

 "British Diatoms," and "New Greville Plates of Diatoms." 



JAMES B. SHEARER, Bay City, Mich. 



FOR SALE— A physician's microscope, manufactured by Bausch & Lomb; 2 eye-pieces; 

 2 objectives, 3-4 and 1-5; micrometer and camera lucida. For further particulars 

 address A. W. ALLEN, 410 Grand River Ave., Detroit. Mich. 



FOR EXCHANGE— Diatomaceous earth from the plateau of Thibet (12,000 feet) varieties 

 localities; also material and slides from localities in Scottish Highlands. Wanted, 

 slides of American Diatoms, Insects and Botany. 



W. D. STEWART, 2 Gilmore Terrace, Edinburgh, Scotland. 



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OR EXCHANGE— Injected cysts of Trichina Spiralis. 



GIL3IAN DREW, Iowa City, Iowa. 



WANTED— Parasites and books on Parasites and other micro-subjects; will give 

 Anatomical, Pathological, Botanical, Microfungi, Zoophytes, Polycistina, Forami- 

 nifera. Parasites, and other slides in return. Shall be glad to open an exchange at any 

 time with micro-correspondents for any of the above subjects. 



FRED. LEE-CARTER, Gosforth, near Newcastle on Lyne, England. 



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OR SALE— A Bausch & Lomb Blodel Microscope, with 1 in. and X in. objectives. 



W. H. OSBORNE, Chardon, O. 



I HAVE a good "Little Monitor " local telegraph sounder and straight lever keytcost 

 new, about $6 to $8), both in good order; also, a Wirt fountain pen (one of the best 

 made, cost $2.50, good as new, having been used but very little; one copy, in cloth, of 

 "Parson's Handbook of Business and Social Forms," 500 pages, $3.50; never used. I wish in 

 exchange, latest editions of Beale's" How to use the Microscope," "The aiicroscopist," by 

 J. H. Wythe: Rev. W. W. Spicer's translation of Johann Nave's "Handbook of Collection, 

 Preparation, etc., of Algae, Diatoms, etc.," or other microscopical works. Correspondence 

 solicited. F. W. DUNNING, 32 So. Division St., Battle Creek, Mich. 



WILL EXCHANGE— Cabinet specimens of gypsum, specular, micaceous, massive and 

 earthy hematite, slides of diatoms, and literary and scientific works, for well 

 mounted slides, tubes of cleaned diatoms, and standard books on microscopy. 



A. F. BARNARD, Box 152, Oberlin, Ohio. 



