72 The Microscope. 



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

 tlna, etc.. and a variety of other good objects, all well inounted . W. EAR.V ELL. . Maco n , Ga. 



WANTED— To exchange, an $35,00 Callgraph, almost new, or an Anthony's Amateur Camera, for 

 a new or second-hand Microscopy W. C. G;)R vI.VX, Randolph, N'ew fork, 



HISTOLOGICAL and Pathological Slides to exchange for other good slides. 

 F. P. col well. fJrbana, O hio. 



FRESH-WATER ALGiE, nearly all genera, and many beautiful varieties; also Euglena, Astasia, 

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



J. M. ADAMS, Watertown, N.Y. 



WOULD like to exchange a l-tj Bausch & Lomb patent adjustment (glycerine front) objective, 

 almost new, for a 1-4 of moderate ang le. O.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 inouutcd micro-slides or cash, for good 

 material. •'• ' PR1NNBUUH. U Simmering, Wlen, Austria. 



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



sale. Price, $7.50. C. H. BTOWELL. 



for other first-class mounts. 

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



T WILL exchange good histological for other first-class mounts^ 

 TTISTOLOGIC AL mounts to exchange for other goodslldes. 



T. B. STOWELL, 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-Mierographic Camera and Plate-Holder, together with the Chemical and 

 Printing Outfits, and a Darlot's Foeusing Glass, for sale. Also, Sldle's Iris Diaphragm, with 

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

 Objective. F. J. S CHAUFELBERGER, M. D., Fostorla, Ohio. 



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

 -L for a good %, %, or <4 in. Objective. T. B. JENNINGS, 78 Major Block, Chicago, 111. 



FOR SALE or exchange, a Taylor Freezing Microtome. 

 F. O. JACOBS, Newa rk, Ohio. 



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

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

 eye shade, etc. GEO. T1M.MIN, S yracuse, NY. 



"1ATILL GIVE a good bargain in micro-objectives, new, made in 1884, for a Morrison wide angle 

 W view lens, for 5x8 or 6*5x8* photo-plates. Write for particular s^^ ^^ ^ 



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

 dress M. KAISER.^U Sycam ore St., Buf fal o, 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. 



OR EXCHANGE— A Gundlach 3 in. no : a Gundlach % In. 27° ; a Gundlach No. IV. (}■*> 55= ; a 

 Geo Wales \U in. 25°; a Paraboloid, cost $7.50; all in good condition. Wanted, a * or 4-10 

 spy-glass, or good condenser. C. OUDEKDONK, 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 mounted objects. WM. F IRNELL, Macon, Ga. 



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

 good slides. EUGENE PlNCRNEl, Dixon, 111. 



ttiXCH^NGE —Untreated diatoms and miscellaneous material in large variety, to exchange for 

 & good prepa red material for mounting of any kind. M. A. B O OTH. Longmeadow, Mass. 



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

 fobiect-srlasses). etc. W. S. WHITE, 128 and 130 Main St., Kalamazoo, Mich. 



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

 Trichina, Diatoms, stained Bacteria, etc. J. O. S 1'ILLSON, Indianapolis, Indiana. 



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

 DR. W. R. CH1TT1 CK. 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 



owu. i- j i« H siTO YW.T.T. Ann A rnor. Alien. 



price. 



C. H. STOWELL, Ann Arbor. Mich. 



AMPHIPLEUR\PELLUCIDA, or any other test diatom, mounted in the new medium, having 

 refracti ve index of 2.4, can be procured from H. H. CHASE, M. P., Geneva, N.Y . 



t WILL SEND a auantity of good diatomaceous material containing Bacillaria Paradoxa— all liv- 

 I Ing-in exchange for well mounted slides. JAj^jL L ATBBOP, Bridgeport, Conn. 



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

 and micro fungi, for other good slides or material. JAMES E. WHITNEY, Rochester, N.Y. 



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

 sneclmens of interest. Lists furnished on application. 

 Bpeum D. E. UAAfi, M.D,, Liberty Center, Henry County, Ohio. 



