352 The Microscope. 



EXCHANGES 



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

 material or books which they ivish to exchange^ and such wants will be inserted b-ree of 

 CHARGE, y/te number of insertions given ivill 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. 



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AMTED IN EXCHANGE— A few first class mounted slides, rare objects or novel modes 

 of preparation preferred. Trash neither offered nor accepted. 



M. A. BOOTH, Long Meadow, Mass. 



OR EXCHANGE— Slides of selected diatoms. 



D. B. WARD, Poughkeepsie, N. Y. 



FOR EXCHANGE— A new and clean copy of Stowell's Manual of Histology— last edition. 

 Wanted— Second-hand copy of Beale's "'How to Work with the Microscope." Also.flrst- 

 class slides of ihe orange tree insect, to exchange for diatoms in tubes. 



E. S. CONTANT, Hawk's Park, Volusia Co., Florida. 



WANTED— The Microscope, Vol. 3, No. 1; Vol. 4, No 3; Vol. .5, Nos. 1, 4, 5, 8, 9, 10, 11, 

 12; Vol. 6, all; Vol. 7, Nos. 5, 7, 8, 9. For sale or exchange, Vol. 3, Nos. 2, 3, 4. Anyone 

 having any of the above, can find a purchaser by addressing. 



CINCINNATI LANCET AND CLINIC, 199 West 7th Street. 



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ANTED— The Microscope, Vol. I[I, Nos. 3, 4, 5 and 6; Vol. IV, Nos. 1, 2, 3, 4, 5, 6, 7, 

 8 and 9; Vol. VI, .Nos. 4 and 5. Addiess 



PROF. H. M. WHELPLEY,St. Louis, Mo. 



FOR EXCHANGE— I offer "The Standard Natural History," six volumes, new and 

 perfect copy, in exchange for type slides of diatoms ; or will sell at reduced price. 

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



FOR SALE— Beck's Popular Binocular Microscope, 5 objectives, 5 eye-pieces, mechanical 

 stage and all accessories, mounting material, slides, etc. Cost about $400. For sale 

 at $150. For list of apparatus, etc., address 



T. W. SMITH, 3640 Indiana Ave., Chicago, lU. 



OR SALE CHEAP — Microscope stand with four eye-pieces, cost $60, never been used; 

 also, Bunsen's Spectroscope, cost $75. For description and price, address 



H. S. JEWETT, M D., 21 S. Ludlow St., Dayton, Ohio. 



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ANTED— No. 2 of Vol. I, and Nos. 3 and 5, of Vol. VI. Address this office. 



OR SALE — Photo-micrographic camera, 14 pi., printing frame, and large Walmsley 

 lantern, $8.00. 



LANCASTER & THOMAS, Pine St., corner 19th St., Philadelphia, Pa. 



WANTED-The following back numbers of The Microscope: All of Vol. I and Vol. II: 

 Vol. HI. No. 1; Vol. IV. Nos. 1, 2, 4. 5, 6, 7, 8. 9, 11, 12— in all, 23 numbers. For any of 

 them I will send a well mounted and interesting micro.scopical slide for each number sen t 

 me, or, if preferred, a tube of cleaned diatoms instead of the slide. 



M. S. VVIARD, New Britain, Conn. 



OR EXCHANGE— A collection of seeds, botanical and miscellaneous material, for 

 diatums, either mounted or in tubes. W. F. ROCHELLE, Jackson, Tenn. 



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ANTED— The Microscope, Vol. 6, Nos. 2. 3, 4 and 5. Address 



H. M. WHELPLEY, 2647 Olive St., St. Louis, Mo. 



FOR EXCHAV(JE— I have a limited number of slides of each of the following: Strychnia 

 Chro.nate (Stryciinia 1-250 gr.) and Strychnia Ferri Cyanide (Strychnia 1-100 gr.) whicb I 

 will exchange for other slides, •' botanical " preferred. Only first-class slides offered or 

 desired. L. A. HARDING, Fergus Falls, Minn. 



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OR EXCHANGE-Slides of named diatoms. 



H. W. WESTOVER St. Joseph, Mo. 



FOR EXCHANGE— The be.st and most convenient drying clip ever made, for good 

 mounted slides. The^e clips are m use by some of the best workers, and once tried 

 are a necessity. Also light saws for bone sections for exchange. 



F. W. LOWDER, Sioux City, Iowa. 



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ILL EX' HANGK for objectives or other microscopical appliances, a Standard 

 Columbia Bicycle, 48 in. large wheel, in good condition Address 



J. R. CHATHAM, Xenia, 111. 



