256 THE MICROSCOPE. 
EXCHANGES. 
This department is for the benefit of suBscRIBERS who have microscopical apparatu s* 
material or books which they wish to exchange, and such wants will be INSERTED FREE OF 
CHARGE. Zhe number of insertions given will depend upon the number of exchanges 
received each month. Subscribers will please notify us when articles have been exchanged 
or sold. Dealers are referred to our advertising department. 
OR SALE CHEAP—A Beck’s Economic Binocular, in perfect condition, complete, with 
four eye-pieces and one-sixth inch objective, for $70. Address } 
L. M. KING, Santa Rosa, Cal. 
| hae SALE CHEAP—A Bausch & Lomb Polariscope in first-class condition. Address 
W. J., 32 West Noble St., Columbus, Ohio. 
O EXCHANGE—Vols. V and VI of THE MickoscopE, which I will sell for $2.50 and 
take cover-glasses as pay—™% and %, and some square. 
A. MILLER, North Manchester, Ind. 
OR EXCHANGE—A Hailes ‘ Poly-Microtome”’ (an automatic microtome for freezing 
or paraffin-embedding), in exchange for a Kodak camera, or other good “ detective.” 
Cc. E. HANAMAN, Box 27, Troy, N. Y. 
ANTED—A copy of each of the following numbers of The Microscopical Bulletin, Vol. 
I, No. 5, August, 1884, and Vol. II, No. 1, February, 1885. For either of them, I will 
send a first-class microscopic slide, or for both I will send three slides. 
M.S. WIARD, New Britain, Conn. 
OR SALE CHEAP—A Bausch & Lomb Universal Microscope complete, with objectives 
and accessories, perfectly new. Address 
; PROF. C. F. EMERY, Ocean Springs, Miss. 
W ANTED—Vols. I to VI of THE Microscopr. Apply, stating price, to this journal. 
OR EXCHANGE—A large variety of minerals and rocks, some p)dlished; also fossils 
and reptiles in fluid, for mounts. Address, 
PROF. J. E. TALMAGE, Salt Lake City, Utah. 
woe SALE—First-class duplicate objects, five for $1. You can get your objects in and 
class you may name, except pathological; but no time for lists. If you do not get $1 
worth, money will be returned on day after slides are returned. 
E. C. HOYT, 215 Howard St., Detroit, Mich. 
OR. SALE—Vols. IV, V, VI, VII, of THE Microscorr, bound in two volumes; fourth 
edition of Wyeth’s ‘‘The Microscopist;’’ Marsh’s ** Section Cutting,”’ and Phin’s “How 
to Use the Microscope.’’ For cash only. 
H. M. RICHARDS, 27 Ellery St., Cambridge, Mass. 
OR SALE—A Bausch and Lomb Model Microscope (No. 521 of their catalogue), as good 
as new, having been used but afew times. There are two objectives, a 1 inch and a 
34 inch, one 2 inch eye-piece, camera lucida, etc. Everything in perfect order. Will be 
sold cheap. Correspondence solicited. Address, 
S. G. ROBBINS, Siverly, Pa. 
aye te sae Microscope, Vol. I to VI inclusive. 
W. E. SWIGERT, Spencer, Owen Co., Ind. 
Ta cored good objectives and eye-pieces; must be in first-class condition. 
State full particulars. Also want unmounted material. Will exchange or buy. 
Correspondence invited. CHAS. von EIFF, 20 Palmetto St., Brooklyn, N. Y. 
BAT ED eH istologics and pathological material to cut on the halves. Nothing but 
first-class material desired. Address C. B. CLAPP, M. D., Danville, Il. 
| ers MOUNTS for sale or exchange: hair of Ornithorhynchus paradoxus; mummy 
cloth, three thousand years old; sections of bark from Charter Oak tree. Address 
PROF. H. M. WHKLPLEY, St. Louis, Mo. 
OR EXCHANGE OR SALE—For microscopical materials or offers: A good Toepler- 
! Holtz Electrical Machine, 12% inch revolving plate, and current breaker, Leyden 
jar, Geissler tubes and numerous other accessories, the whole costing about $60. Will 
exchange for a good microscope, and pay differenca. Correspondence solicited. 
F. FE. WOOD, Prin. Blair Graded School, Blair, Wis. 
OR SALE—A B. & L. Section Cutter, glass top, and micrometer screw, in perfect order, 
good as new, cost $7.50; will sell for $5. 
H. F. WEGENER, 1305 S. Tenth St., Denver, Col. 
