128 The Microscope. 



EXCHANGES. 



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

 material or books which they wish to exchange, and such wants will be given one insertion 

 FREE OF CHARGE. Dealers are referred to our advertising department. 



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ANTED— I will pav cash for a Bausch & Lomb "Universar' Microscope Stand, if in 

 good order. " LYMAN DECK, M. D., Salamanca, N. Y. 



[TRINARY CRYSTALS in exchange for same, also correspondence with others on 

 U unusual products of urine. J. M. ADAMS, Watertovvn, N. Y. 



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ANTED— A Microtome with freezing apparatus, in good working order. 



J. H. THOMPSON, 17 26th St., Kansas City, Mo. 



EXCHANGE— Tegel (Fossil Deposit) from Briinm. Moravia, Austria, containing fine 

 forms and Marine Diatoms. Samples of 50 Grammes will be sent to anyone. 

 Wanted in exchange good Amen('an Diatommaceous material of all kinds: Preferred, 

 fossil earth from Santa Monica, Santa Maria, Monterey, Cal., and Seaweeds or Seamud, with 

 Marine Diatoms. J. C. RIMBOCK, 14 Simmering-Wein, Vienna, Austria. 



FOR EXCHANGE OR SALE— Animal Haii-s, Lepidoptera " Scales," etc., mounted and 

 unmounted. Pollens, Starches and a few Zoophytes mounted only. Will exchange 

 Slides for Microscopical Instruments. 



HERBERT M. RICHARDS, Sadsburyville, P. O., Chester Co., Pa. 



WANTED— Second-hand Microscope of modern American make, with accessories and 

 objectives. 2 inch to 'e inch focus. Parties having same, in whole or in part, please 

 address ' EDWIN A. HILL, 2Q W. New York St., Indianapolis, Ind, 



O EXCHANGE— Carpenters, "The Microscope and its Revelations," new, for Real's 

 " One hundred urinary deposits," and Dolly's " Technology of Bacteria Investigation." 



A. R. BOOTH, M. D., Shreveport, La. 



POUNDS Gulf Marine diatom muds for exchange; 10 selections of cleaned Marine 

 Gulf diatoms. Correspondence invited from anyone. 



K. M. CUNNINGHAM, Land Office, M. & O. R. R. Co. 



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OR SALE— A Beck Universal Microscope, with three eye pieces and two objectives, in 

 mahogany case; price twenty dollars. Also a variety of slides for exchange. 



E. H. RICHARDS, Woburn, Mass. 



FOR SALE— At about one-half cost, a Tolles 1-6 water im. 180°, in perfect condition; or 

 would exchange for a good working stand of recent make, Acme No. 4, Bullock's New 

 Student, or Bausch & Lomb's Physician's, or Investigator. Address X. Y., care of the pub- 

 lishers of this paper. 



INTERESTING MOUNTS in exchange for meat containing trichina. 

 H. M. WHEPLEY, St. Louis, Mo. 



WANTED — A copy of Phin's "American Journal of Microscopy," No. 1 of Vol. I, for 

 which I will seiid two well mounted and interesting slides; also one copy each of Nos. 

 11 and 12 of Vol. VI, for which one slide each is offered. M. S. WIARD. New"Britain, Ct. 



ECHEIN GREEN— New Stain, to stain from 500 to 1,000 sections, 15 cents; Chrokallus, 

 pink, crimson, orange, and blue, 15 cents each; all sent by mail with directions for use. 

 Pollen for sale or exchange. J. D. BECK, Box 10, Liberty, Tioga Co., Pa. 



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ISTOLOGICAL and Pathological Mounts for exchange. Send lists. 



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



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OR EXCHANGE— Histological Mounts. 



T. W. JOHNSON, .M. D., Danville, Indiana. 



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OR EXCHANGE— Mounted Histological and Pathological Sections. 



W. C. BORDEN, M. D., U. S. A., Fort Douglas, Utah. 



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ANTED— Who has a second-hand 1-10 in. horn. im. objective for sale, in good order, 

 Bausch & Lomb, or Beck, preferred. 



Address GEORGE H. McCAUSEY, Janesville, Wis. 



I WILL EXCHANGE Arachnoidiscus on algte and diatomaceous earth from different 

 localities in the State; also slides of same for well mounted objects. Diatoms pre- 

 ferred. F. L. C.4.UCH. Carpenteria, Santa Barbara Co., Cal. 



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OR EXCHi^NGE— Vols. 4. 5 and 6 of The Microscope, unbound, postpaid. Who will 

 give the most mounted slides ? C. A. RAYMOND, Gaston, Washington Co., Ore. 



