216 THE MIcROSCOPE. 
LEASE ANNOUNCE that I will supply labels. cards, and other first- 
class printing in exchange for good slides. EUGENE PINCKNEY, 
Dixon, Til 
7 XCHANGE.—Untreated diatoms and miscellaneous material in large 
variety to exchinge for good prepared material for mounting of any 
kind. M. A. BOOTH, Longmeadow, Mass. 
XCHANGE—I have s:bout one hundred lantern slides to exchange for 
Microscopiea! apparatus (object-glasses), ete W. 5S. WHITE, 128 and 
130 W. Main street, Kalamazoo, Mich. 
~XCHANGEW—A Tolles’ Binocular Eye-piece, (cost $80.00), for a first- 
class, Wide angle Objective. J.T. MAIN, Jackson, Mich. 
CARI INSECTS, Pathological nnd other well mounted-slides in ex- 
ehange for Pieurosigma, Trichina, Diatoms, Stained Bacteria, etc. 
J. O. STILLSON, Indianapolis, Indiana. 
| Peer SALE,—S ides, double stained, of Bacillus Tuberculosis, 50c. each. 
DR. W. RJ CHITTICK, 88 L-fayette Avenue, Detroit, Mich. 
ace lee Rr wea on microscopical and histological subjects 
not already im my possession, Wall pay cash or give slides in ex- 
change, State name of the work, date of issue, and price. C. H.STOWELL, 
Aun 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, etc.,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, Corn. 
IVING or mounted red astasia bematoides (Euglena viridis) also Valvogx 
aud other choice Algz in exchange for Algae, fungi or infusoria. J. 
M. ADAMS, Watertown, N.Y. - 
ILL Exchange mounted slides of various crystals, diitoms, in situ, stel- 
ete hoirs of plants and micio fungi, for other good slides or material. 
JAMES KE. WHITNEY, Rochester, N. Y. 
AVHOLOGICAL, Histological and other well mounted slides will be ex- 
changed for mounted specimens of juterest. 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 any specimens of inter- 
est. MISS L. M. BERKEY, Grand Rapids, Mich. 
