96 The Microscope. 



EXCHANGES 



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

 material or books which they wish to exchange^ and ftuch ivants will be inserted free of 

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

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

 or sold. Dealers are referred to our advertising department. 



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 Model Microscope, with 1 in. and M in. objectives. 



W. H. OSBORNE, Chardon, O. 



I HAVE a good "Little Monitor " local telegraph sounder and straight lever key (cost 

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

 made, cost $4.50, 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 Microscopist," by 

 J. H. Wythe; Rev. W. W. Spicer's translation of Joliann 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, 3Iich. 



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. P. BARNARD, Box 152, Oberlin, Ohio. 



OR SALE— Powell it Lealand No. 3 Microscope stand, with three eye-pieces and several 

 accessories. Address, A. L. WOODWARD, 53 Lansing St., Utica, N. Y. 



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ONE and fruit-stone sections for good, medium-angle objectives. 1-5 to 1 inch. 



A. E. WARREN, Rio Vista, Virginia. 



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ANTED TO PURCHASE -America??, Journal of Microscopy, Vol. I, 1876, No. 8. Vol. 

 Ill, 1878, No. 3. American Monthly Microscopical Journal, Vol. VII, 1886, No. 11. 

 C. C. MELLOR, 77 Fifth Ave., Pittsburgh, Pa. 



MR. EDITOR— Will you allow me to say, through the medium of your pages, to the 

 numerous correspondents who have written me in reply to my notice in your 

 Exchange Column, that I exhausted my stock of slides of salicine and urinary deposits 

 within a few days after the appearance of the notice, and that my ever-increasing duties 

 as editor and physician have thus far given me no opportunity to make any fresh ones. 

 Whenever I can get a few hours of leisure I shall make enough to supply all those who 

 have written me, and will give immediate notice thereof in The Microscope. 



FRANK L. JAMES, M.D., Box 568, St. Louis, Mo. 



WANTED TO EXCHANGE— Six complete volumes of The American Monthly Micro- 

 scopical Journal — Vols. I, II, III, IV, V. VI, for first-class diatoms or double-stained 

 plant sections. Correspondence solicited. Address, 



W. H. CURTIS, Box 66, Haverhill, Mass. 



FIRST-CLASS HISTOLOGICAL AND PATHOLOGICAL MOUNTS in exchange for 

 instruments or books on Microscopy. 



A. J. C. SAUNIER, M. D., 92 Laflin St., Chicago, 111. 



X.NTED— Nos. 1, 2, 3 and 5 of Vol. I of The Microscope— 25c each paid. Address this 

 ofifice. 



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FOR SALE OR EXCHANGE— .Mounted urinary sediments, pathological specimens, 

 photo-micrographs, anatomical and pathological material, for mounted slides or pho- 

 tomicrographs on medical subjects. E. L. SMITH, Bellefontaine, Ohio. 



FOR SALE— A fine Beck's Ideal 1-6 objective, adjustable, unused and perfect; corrections 

 excellent. Beck's list price, $30; will sell for |20, or will exchange for a new first-class 

 1-2 or 4 10 inch objective. D. HUMPHREY, Lawrence, Mass. 



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OUNTS OF FCETAL (5 MONTHS) LUNG, section across entire lobe, 1-2000 in. thick, 

 beautifully stained, in exchange for first-class Pathological Slides. 



W. 0. BORDEN, M. D., U. S. A., Fort Douglas, Utah. 



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ISTOLOGICAL, PATHOLOGICAL AND MISCELLANEOUS MOUNTS for exchange 

 by H. W. WESTOVER, M. D., St. Joseph, Mo. 



