EXCHANGES. 



(Exchanges are inserted without charge. Subscribers having microscope apparatus for sale or 

 exchange can announce the same without charge. ) 



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 mounted 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 preparing 

 them, all for S3. J. D. BECK, Liberty, Pa. 



FOR EXCHANGE— Zeitschrift fur wlssenschaftliche Mlkroskopie, Volume I., 1884. Would 

 prefer type-slides of diatoms In exchange. Address, 



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



FOR EXCHANGE— Mammoth Atlas of Human Anatomy, 45 parts, unbound, by Drs. Vesterrei- 

 gherand Erdl. Cost me *3.S. To. Will exchange for *>u worth of accessories or objectives. 

 B DR. C.H. LOVE WELL, Englcwood, 111. 



FRESH WATER ALG..E, very numerous species, Inclnding Volvox in abundance, Desmids of 

 all kinds, Draparnaldia, Rivalaria, Anabaena Tetraspora Ax., &c. 



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



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

 Calcbicum, Tons les Mois, etc.,) forone mounted slide objects pertaining m vegetable histology 

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



OEEDS of Orttlocarpus Purpurasceus and slides of same in exchange for other objects mounted 

 ►J or unmounted. EDWARD GRAY, M. D., Beuicia, California. 



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

 EDWARD G. DAY, Riverside, Conn. 



DIATOM ACEOUS 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, Virg Rappahanoek 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. Ms ss. 



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

 ■»■ Una, 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. 



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

 sale. Pr ice, $7.50. C. H. S TOWE LL. 



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



1 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. 



»LEASE announce that I will supply labels, cards, and other tirst -class printing in exchange for 

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



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

 Trichina, Diatoms, Stained Bacteria, etc. 'J. O. S 1TLLSON, Indianapolis, Indiana. 



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

 DR. W. R. CHITTICK, 83 Lafayette Av 



venue, 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 Arbor. Mich. 



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

 refractive Index of 2.1, can be procured from H. H . CHASE, M. U., 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. 



