240 Tue Microscope. 
LEASE ANNOUNCE that I will supply labels, cards, and other first- 
class printing in exchange for good slides. KUGENE PINCKNEY, 
Dixon, Iil. 
XCHANGE.—Untreated diatoms and miscellaneous material in large 
variety to exchange for good prepared material for mounting of any 
kind. M. A. BOOTH, Longmeadow, Mass. 
XCHANGE—I have about one hundred lantern slides to exchange for 
Microscopical apparatus (object-glasses), etc W. 8S. WHITE, 128 and 
130 W. Main street, Kalamazoo, Mich. 
XCHANGE.—A Tolles’ Binocular Eye-piece, (cost $80.00), for a first- 
class, wide angle Objective. J.T. MAIN, Jackson, Mich. 
CARI INSECTS, Pathological and other well mounted slides in ex- 
change for Pleurosigina, Trichina, Diatoms, Stained Bacteria, etc. 
J. O. STILLSON, Indianapolis, Indiana. 
| Slee SALE,—Slides, double stained, of Bacillus Tuberculosis, 50c. each. 
DR. W. R. CHITTICK, 83 Lafayette Avenue, Detroit, Mich. 
ANTED.— Books treating on microscopical and histological subjects 
not already in my possession. Will pay cash or give slides in ex- 
change. State name of the work, date of issue, and price. C. H.STOWELL, 
Ann Arbor, Mich. 
ILL Exchange mounts of stained vegetable sections for other mounts of 
interest. MRS. L. R. LOOMIS, Ann Arbor, Mich. 
MPHIPLEURA PELLUCIDA or any other test diatom mounted in 
the new medium having refractive index of , 2.4 can be procured from 
H. H. CHASE, M. D., Geneva, N. Y. 
*ECTIONS of bone of cat, and purcupine quill, seed of Papara somni- 
ferum and Lychnis githago,eye spots and pieces of wings of Attiacus 
cebropia and promethens, ete.,for other good slides. HOWARD N. LYON, 
80 South St., Auburn, N. Y. 
— 
WILL send a quantity of good diatomaceous material containing Baccil- 
aria Paradoxa—all living—in exchange for well mouuted slides. JAS. 
C. LATHROP, Bridgeport, Coin. 
IVING or mounted red astasia hematoides (Kuglena viridis) also Valvox 
and other choice Alge in exchange for Algae, fungi or infusoria. J. 
M. ADAMS, Watertown, N. Y. . 
Ay ILL Exchange mounted slides of various crystals, diatoms, in situ, stel- 
lete huirs of plants and micio fungi, for other good slides or material. 
JAMES EK. WHITNEY, Rochester, N. Y. 
—— 
A'THOLOGICAL, Histological and other well mounted slides will be ex- 
changed for mounted specimens of interest. Lists furnished on applica- 
tion. D. E. HAAG, M. D., Liberty Center, Henry County, Ohio. 
OULD like to exchange a 1-6 objective, 160°, adjustable, for a lower 
power. A. Y. MOORE, 89 Prospect street, Cleveland, Ohio. 
XCHANGE.—I have a large number of vegetable mounts, single and 
double staining. Would like to exchange tor ary specimens of inter- 
est. MISS L. M. BERKEY, Grand Rapids, Mich. 
