288 Tue MICROSCOPE. 
EXCHANGES, 
This department is for the benetit of SUBSCRIBERS who have microscopical appar- 
atus. material or books which they wish to exchange, and such wants will be INSERTED 
FREE OF CHARGE. The 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. 
OR SALE CHEAP—A Bausch & Lomb Polariscope in first-class condition. 
Address W.J., 32 West Noble St., Columbus, Ohio. 
0 EXCHANGE—Vols. V and VIof Tux Mrcroscorx, which I will sell for $2.50 
and take cover-glasses as pay—'% and 34, and some square. 
A. Miller, North Manchester, Ind. 
OR EXCHANGE—A Hailes’ “ Poly-Microtome”’ (an automatic microtome for freez- 
ing or paraffine-embeddiug), in exchange for a Kodak camera, or other good “‘de- 
tective.”’ C. E. Hanaman, Box 27, Troy, N. Y. 
ANTED—A copy of each of the following numbers of ‘ 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 ob- 
jectives and accessories, perfectly new. Address, 
Prof. C. F. Emery, Ocean Springs, Miss. 
T OR EXCHANGE—A large variety of minerals and rocks, some polished ; also fossils 
and reptiles in fluid, for mounts. Address, 
Prof. J. E. Talmage, Salt Lake City, Utah. 
OR SALE—First-class duplicate objects, five for #1. You can get your objects in 
any class you may name, except pathological; but no timefor 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 THr Microscorsr, 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—Bausch & Lomb Model Microscope (No. 521 of their catalogue), as good 
as new, having been used but a few times. There are two objectives, a 1 inch and 
a ¥ inch, one 2inch eye-piece, camera lucida, ete. Everything in perfect order. Will 
be sold cheap. Correspondence solicited. Address, 
S. G. Robbins, Sivery. Pa, 
1 ne Re MicroscoPE, Vol. I to IV inclusive. 
W. E. Swigert, Spencer, Owen Co., Ind. 
ANTED-—Several 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. yon Eiff, 20 Palmetto St., Brooklyn, N. Y. 
WANTED — Histological and pathological material to cut on the halves. Nothing 
but first-class material desired. Cc. B. Clapp, M. D., Danville, Ill. 
ARE MOUNTS for sale or aap ap hair of Ornithorhynchus paradoxus; mum- 
my cloth, three thousand years old; sections of bark from Charter Oak tree. 
Address, Prof. H. M. Whelpley, St. Louis, Mo, 
OR EXCHANGE OR SALE—For microscopical materials or offers: A good Toep- 
ler-Holtz Electrical Machine. 1244 inch revolving plate, and current breaker, 
Leyden jar, Geissler tubes and numerous other accessories, the whole costing about 
$60. Will sell or exchange for a good microscope, and pay difference. Correspondence 
solicited. ¥. F. 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. 
| ed EXCHANGE-A Browning’s Student’s Spectroscope, for a microscope stand, 
or other apparatus. Cc, E. Norton, M. D., Lewiston, Me. 
