48 The Microscope. 



I HAVE for exchange Stellate Hairs of Plants, Pollen, and Seeds; also various Diatoms, Polycls- 

 tina, etc.. and a variety of other good objects, all yell mounted. W. farnkll, Mac on, Q*. 



WANTED— To exchange, an 135,03 Callgraph, almost new, or an Anthony's Amateur Camera, for 

 a new or seeoud-hand Mioroicop:. W. C. GORMAN, Randolph, New York, 



HISTOLOGICAL and Pathological Slides to exchange for other good slides. 

 F F. COL WELL, Urbana, Ohio. 



FRESH-WATER ALG^E, nearly all genera, and many beautiful varieties; also Euglena, Astasia, 

 etc., for good pathological or other interesting slides. Lists exchanged. 

 J. M. ADAMS, Watertowa, N. Y. 



WOULD like to exchange a 1-6 Bausch ft Lomb patent adjustment (glycerine front) objective, 

 almost new, for a 1-4 of moderate angle. C.B.HIGBY, Mokelumne Hill, Cal. Co. , California. 



WANTED— Diatoms on Algae, from the Sandwich Islands, California coast, and other tropical 

 sea coasts. Will give in exchange either very good mounted micro-slides or cash, for good 

 material. J. C. PR1NNBOCH, 14 Simmering, Wlen, Austria. 



FOR SALE.— A copy of Prof. Leidy's great work on the Rhizopods has been left at this office for 

 sale. Pr ice, 87.50. U. ii. STOWELL. 



I WILL exchange good histological for other first-class mounts. 

 S. G. SHANKS, M.D., 547 Clinton Avenue, Albany, N.Y. 



HISTOLOGICAL mounts to exchange for other good slides. 

 _ T. B. STO WEL L , Ph.D., Cortland, N Y. 



HISTOLOGICAL SLIDES, very thin and evenly cut, well mounted and well ringed, will be ex- 

 changed for Pathological or Histological slides only 



H. L. WHITNEY, M.D., German Hospital, Philadelphia, Pa. 



WALMSLEY'S Photo-Micrographic Camera and Plate-Holder, together with the Chemical and 

 Printing Outfits, and a Darlot'8 Focusing Glass, for sale. Also, Sidle's Iris Diaphragm, with 

 society screw for sub-stage; Beck's 1 in, and %> In. Objectives (National); Bausch & Lomb's 2 In. 

 Objective. F. J. SCHAUFELBEKGER, M.U., Fostoria, Ohio. 



rpO EXCHANGE— A new and perfect copy of Leidy's Fresh-Water Rhizopods of North America 

 J- for a good %, %, or % in. Objective. T. B. JENNINGS, 78 Major Block, Chicago, 111. 



FOR SALE or exchange, a Taylor Freezing Microtome. 

 F. O. JAC OBS, Newark, Ohio. 



FOR SALE. CHEAP— A Bausch & Lomb Dissecting and Compound Microscope (as figured in 

 their Catalogue, p. 6) ; has a Wales dividing objective 14 to %, two simple lenses \14, hand rests, 

 eye shade, etc. GEO. T1MM1N, Syracuse, N. Y. 



WILL GIVE a good bargain in micro-objectives, new, made in 1884, for a Morrison wide angle 

 view lens, for 5xS or'ti'.xs 1 ., photo-plates. Write for particulars. 



JOHN D WH IT E, Chi co pee, Mass. 



WANTED— A good Zentmayer Stand. Second-hand Bl- or Monocular cheap, for cash. Ad- 

 dress M. KAISER, 424 Sycamore St., buffalo, N. Y. 



WR. MANDEVILLE, M.D., of New Orleans, La., 483 Magazine St.. has for exchange or sale a 

 • number of first-class mounts of Pathological Specimens, including Yellow Fever, Leprosy, 

 and various Bacteria; also a large n umber of miscellaneous objects. 



FOR EXCHANGE— A Gundlach 3 in 11° : a Gundlach % in. 27- ; a Gundlach No. IV. 0*. 55= ; a 

 Geo. Wales 1J4 in. 25=* ; a Paraboloid, cost 87.5U; all in good condition. Wanted, a H or 4-10 

 9py-glass, or good condenser. C. OUDERDONK, R u gby, Tenn. 



DIATOMS ON ALGA. Achnanthes bevipes, etc. Polycistana, Fossil Diatoms, etc. Sertularia 

 Pluma, Sertularia Crustata, etc. Spore cases of Fern too numerous to mention, to exchange 

 for well mou nted objects. WM. FA.RN E LL, Macon, Ga. 



PLEASE announce that I will supply labels, cards, and other first-class printing in exchange for 

 good slides. EUGENE P1NCK.NKY, Dixon, 111. 



1 EXCHANGE.— Untreated diatoms and miscellaneous material in large variety, to exchange for 

 - 1 good prepared material for mounting of an y kind. M. A. BOOTH, Lo n gmeadow, Mass. 



I EXCHANGE. —I have about one hundred lantern slides to exchange for microscopical apparatus 

 J (object-glasses), etc. W. S. WHITE, 128 and 130 Main St., Kala mazoo, Mich. 



ACARI INSECTS, pathological and other well mounted slides, in exchange for Pleurosigma, 

 Trichina, Diatoms, stained Bacteria, etc. J. O. S ITLLSON, I ndianapolis, Indiana. 



FOR SALE —Slides, double stained, of Bacillus Tuberculosis, 50c. each. 

 DR. W. R. CHITTICK, 83 Lafayette Avenue, Detroit, Mich. 



WANTED.— Books treating on microscopical and histological subjects not already in my posses- 

 sion Will pay cash, or give slides in exchange. State name of the work, date of issue, and 

 price. C. H. S TOWELL, Ann A rbor, Mich. 



AMPHIPLEURAPELLUCIDA, or any other test diatom, mounted in the new medium, having 

 refractive index of 2 . 4, can be procured from H. H. CHASE, M. P.. Geneva, N.Y. 



I WILL SEND a quantity of good diatomaceous material containing Bacillaria Paradoxa— all liv- 

 ing—in exchange for well mounted slides. J AS. 0. LATHBOP, Bridgeport, Co nn. 



WILL exchange mounted slides of various crystals, diatoms in situ, stellate hairs of plants 

 and micro fungi, for other good slides or material. Ja.MEs E. WHITNEY, Rochester, X. Y. 



PATHOLOGICAL, Histological, and other well mounted slides will be exchanged for mounted 

 specimens of interest. Lists furnished on application. 



D. E. HAAG, M.D,, Liberty Center, Henry County, Ohio. 



