

96 The Microscope. 



TO EXCHANGE— Pulvermacher chain battery (100 elements) for applying electricity to the hody 

 — coat *30 for cheap microscope stand, slides, minerals or lantern slides. 



J. CROWTHER, 3* Pleasant St., Fall River, Mass. 



FOR SALE.— A Tolles flrst-class 1-15 objective, 170° objective immersion. Cost «120.00, will 

 sell cheap; or would exchange for flrst-class, wide angle objectives of lower power. 



J. B. MARVIN, M. D., 903 4th ave., Louisville, Ky. 



"IN EXCHANGE for "Thk Microscope" for 1884, I offer the "Science Review" (English) Vol. I. 

 L Address, A. B. AUBERT, Orono, Penobscot Counnty, .Maine. 



FOR EXCHANGE— A good refracting telescope 254 In. operture which will resolve Epsilon Lyra 

 with half inch eye piece— value S65, will exchange for a first-class liausch & Lomb objective. 



J. E, WHITNEY, Rochester, N. V. 



WANTED.— Diatoms on Algae or in muds from all the tropical sea shores, especially from 

 Puget Sound, Pensacola, Campeach Bay, Tampa Bay, and fossil earths from Petersburg, 

 Popleine, Virg. Kappahanock Cliff, Piscataway. New and old Nottingham, Maryland. Will give 

 cash or beautiful diatom material from Europe In exchange. 



J. C. R1NNBOCK, W T Ien, Simmering 14, Austria. 



WILL exchange mounted slides of various minerals (native crystals), and others, for well 

 mounte d slides. JY 1LL H OLMSTED, Syracuse, N. V. 



EXCHANGE.— Parties having diatomaceous earths or other microscopical material, prepared or 

 crude, fur exchange, please communicate with M. A. BOOTH, Longme adow. M ssb. 



SEVERAL Photographic Instruments, list of photo California Views, on paper 5x8, or stereo, or 

 same on glass for magic lantern; upwards of WO oil, four-inch paintings of foreign scenes, for 

 lantern; to exchange for good microscope stand and accessories, slides, etc. 



R. E. WOOD, St. Hele na, Napa Co., California. 



TJEEN'S New Sub Stage Condenser, with dividing combination for high or low powers, and 

 three Caps, for sale or exchange. DR. A. C. STOKES, Trenton, N. J. 



Q 



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

 J- tina, etc., and a variety of other good objects, all well mounted. W. FARNELL, Macon, Ga. 



HISTOLOGICAL and Pathological Slides to exchange for other good slides. 

 F. F. COL WELL, Urbana, Ohio. 



FRESH-WATER ALGJE, 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. 



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

 i " 



T WILL exchange good histological forother first-class mounts 



Price, ST. 50. C. H. STOWELL. 



for other first-class mounts. 

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



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

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

 eye shade, etc. GEO. T1MMIN, Syracuse, N. Y. 



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

 view lens, for 5x8 or 6J4x8M photo-plates. Write for particulars. 



JOHN D WHITE, Chi copee, Mass. 



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

 good slides EUGENE P1NCKNEY, Dixon, 111. 



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

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



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

 Trichina, Diatoms, Stained Bacteria, etc. J. O. S IILLSON, Indianapolis, 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. STOWELL, Ann Arbor. Mi ch. 



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

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



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

 ing—in exchange for well mounted slides. JAS. C. LA T HROP, B ridge port . Conn. 



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

 specimens of interest. Lists furnished on application. 



D. E. HA AG, M.D,, Liberty Center, Henry County, Ohio. 



