64: The Mickoscope. 



EXCHANGES. 



This department is for the benefit of subscribers who have microscopical apparatus, 

 material or books which they wish to exchange, and such wants will be given one insertion 

 FREE OF CHARGE. Dealers are referred to our advertising department. 



F 



OR SALE— A Beck Universal Microscope, witli tliree eye pieces and two objectives, in 

 mahogany case; price twenty dollars. Also a variety of slides for exchange. 



E. H. RICHARDS, Woburn, Mass. 



FOR SALE— At about one-half cost, a ToUes 1-6 water iin. 180°, in perfect condition: or 

 would exchange for a good working stand of recent make, Acme No. 4, Bullock's New 

 Student, or Bausch & Lomb's Physician's, or Investigator. Address X. Y., care of the pub- 

 lishers of this paper. 



F 



OR SALE — A new Zentmayer army niicroscope stand, binocular — made to order, with 

 complete outfit of accessories. Box 119, Englewood, N. J. 



INTERESTING MOUNTS in exchange for meat containing trichina. 

 H. M. WHEPLEY, St. Louis, Mo. 



WANTED— A copy of Phin's "American Journal of Microscopy," No. 1 of Vol. I, for 

 which I will send two well mounted and interesting slides; also one copy each of Nos. 

 11 and 13 of Vol. VI, for which one slide each is offered. M. S. WIARD, New Britain, Ct. 



ECHEIN GREEN— New Stain, to stain from 500 to 1,000 sections, 15 cents; Chrokallus, 

 pink, crimson, orange, and blue, 15 cents each; all sent by mail with directions for use. 

 Pollen for sale or exchange. J. D. BECK, Box 10, Liberty, Tioga Co., Pa. 



H 



ISTOLOGICAL and Pathological Mounts for exchange. Send lists. 



J. H. SMITH, M. D., 909 S. Charles St., Baltimore, Md. 



E 



OR EXCHANGE— Histological Mounts. 



T. W. JOHNSON, M. D., Danville, Indiana. 



F 



OR EXCHANGE— Mounted Histological and Pathological Sections. 



W. C. BORDEN, M. D., U. S. A., Fort Douglas, Utah. 



F 



OR EXCHANGE OR SALE— Mounts of Lepidoptera "Scales," Pollens, Starches, Animal 

 hytes. 

 ERBET M. RICHARDS, Sadsburyville P. O.. Chester Co., Pa. 



Hairs, and a few Zoophytes. 

 HEP 



W 



ANTED— Who has a second-hand 1-10 in. hom. im. objective for sale, in good order, 

 Bausch & Lomb, or Beck, preferred. 



Addi-ess GEORGE H. BIcCAUSEY, Janesville, Wis. 



I WILL EXCHANGE Arachnoidiscus on algae and diatomaceous earth from different 

 localities in the State; also slides of same for well mounted objects. Diatoms pre- 

 ferred. F. L. CAUCH, Carpenteria, Santa Barbara Co., Cal. 



F 



OR EXCHANGE— Vols. 4, 5 and 6 of The Microscope, unbound, postpaid. Who will 

 give the most mounted slides ? C. A. RAYMOND, Gaston, Washington Co., Ore. 



D 



P.. F. P. PECK, of the Iowa Hospital for the Insane at Mt. Pleasant, offers fifty cents 

 for No. 4, Vol. VI., of The Microscope. 



FIRST-CLASS DIATOM SLIDES— 250 species and deposits, including tests. Also 

 miscellaneous objects, mounted and unmounted, at the lowest possible cash rates. 

 Correspondence invited. M. A. BOOTH, Lougmeadow, Mass. 



F 



OR SALE— A Tolles >i objective 40° to 70°, adjusting by front lense. In perfect 

 condition. DAVENPORT FISHER, 110 Huron St., Milwaukee, Wis. 



