96 The Microscope. 



EXCHANGES. 



This department is for the benefit of subscribers wlio have microscopical apparaluH, 

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

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



X. Y. will please forward his address to this office where a letter awaits him. 



WANTED— Secoud-hand Micro.'icope of modern American make, with accessories and 

 objectives, 3 inch to Yb inch focus. Parties having same, in whole or in part olease 

 address EDWIN A. HILL, 26 W. New York St., Indianapolis, Ind. 



TO EXCHANGE— Carpenters, "The Microscope and its Revelations," new for Real's 

 " One hundred urinary deposits," and Dolly's " Technology of Bacteria Investigation " 



A. R. BOOTH, M. D., Shreveport, La. 



1 C\Ci POUNDS Gulf Marine diatom muds for exchange; 10 selections of cleaned Marine 

 -M-\J\J Gulf diatoms. Correspondence invited from anyone. 

 K. M. CUNNINGH AM, Land Office, M. & O. R. R. Co. 



FOR SALE— A Beck Universal Microscope, with three 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 Tolles 1-6 water im. 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. 



FOR SALE— A new Zentmayer army microscope 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 sUdes; also one copy each of Nos 

 11 and 12 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; ChrokaUus 

 pink, crimson, orange, and blue, 15 cents each; all sent l)y mail with directions for use 

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



HISTOLOGICAL and Pathological Mounts for exchange. Send lists 

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



FOR EXCHANGE— Histological Mounts. 

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



FOR EXCHANGE— Mounted Histological and Pathological Sections. 

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



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

 Hairs, and a few Zoophytes. 

 HERBET M. RI CHARDS, Sadsburyville P. O.. Chester Co., Pa. 



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

 Bausch & Lomb, or Beck, preferred. 

 _^^ Address GEORGE H. McCAUSEY, 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. 



FOR 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. 



DR. 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, Longmeadow, Mass. 



