284 The Microscope. 



WANTED— One copy of each of the following numbers of Phin's Journal of Microscopy. Vol. I., 

 No 1; Vol. III., Nos. 2 and 7; Vol. IV.. Nos. 5 and 6. Will give a well monnted and Interest- 

 ing microscopic object per copy for any of the numbers wanted. 



M. S. WIARD, New Britain, Conn. 



5 VEGETABLE slides, double-stained, new method, formulae and short process for prenaring 

 them, all for $3. J. D. BECK, Liberty, Pa. 



OR EXCHANGE— Zeltschrift fur wlssenschaftliche 

 prefer type-slides of diatoms In exchange. Address, 



A. B. AUBERT, Orono, Penobscot County, Maine 



FRESH WATER ALGjE, very numerous species, Inclnding Volvox In abundance, Desmlds of 

 all kinds, Draparnaldia, Rivalarla, Anabaena Tetraspora &c, &c. 



J. M, ADAMS, Watertown, N. T. 



FOR EXCHANGE— Eleven varieties of unmounted starches (including Calabar Beans, Ginger, 

 Calchlcum, Tous les Mols, etc.,) for one mounted slide objects pertaining to vegetable histology 

 preferred. C. V, BOOTH, 278 Greenwich St. N. Y. City. 



SEEDS of Orthocarpus Purpurascens and slides of same in exchange for other objects mounted 

 or unmounted. EDWARD GRAY, M. D., Benicia, California. 



WANTED— Well cleaned and selected Foramenifera for which ca«h will be paid or slides given. 

 EDWARD G. DAY, Riverside, Conn. 



DIATOMACEOUS Earth from Denver, Colo., In exchange for mounting material. 

 H. B. CHAMBERLIN, box 1597, Denver, Colo. 



WANTED— Microscope stand and microscopical books and journals. Will give various articles 

 or cash for same. Send for list. C. VON E1FF, Jr. 347 Greenwich St., New York City. 



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

 cash or beautiful diatom material from Europe in exchange. 



J. C. R1NNBOCK, WIen, Simmering 14, Austria. 



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

 crude, for exchange, please communicate with M. A. BOOTH, Longmeadow. Msss. 



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 well mounted. W. FARNELL, Macon, Ga. 



HISTOLOGICAL and Pathological Slides to exchange for other good slides. 

 F. F. COLWELL, Urbana, Ohio. 



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

 sale. Price, S7.50. C. H. STOWELL. 



I WILL exchange good histological 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 Pathnlne-ir.sil or Histological slides only. 



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



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

 good slides. EUGENE P1NCKNEY, Dixon, 111. 



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

 Trichina, Diatoms, Stained Bacteria, etc. J. O. S TILLSON, 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, Mich. 



AMPHIPLECRA 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. LATHROP, Bridgeport, Conn. 



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. 



"CQR SALE OR EXCHANGE— A Student Microscope and Objectives. _ 



-P E. L. CHEESEMAN, Knowlesville, N. Y. 



DIATOMACEOUS Clay from this place and slides of Foramlnifera and Diatoms to exchange for 

 fine slides or material. E. H. RICHARDS, Woburn, M ass. 



PATHOLOGICAL, Histological and Miscellaneous Mounts, will be exchanged for mounted speci- 

 mens or matcriaj. H. W, WESTOVER, M. D., St. Joseph, Mo. 



