120 Tue Microscope. 
EXCHANGES. 
(Exchanges are inserted on this page without charge. Subscribers having 
microscopic apparatus for sale or exchange can announce the same without 
charge.) 
IATOMS ON ALGA. Achnanthes bevipes, ete., Polycistana, Fossil 
Diatoms, ete., Sertularia Pluma, Sertularia Crustata, ete. Spore cases 
of Fern too numerous to mention, to exchange for well mounted objects. 
WM. FARNELL, Macon, Ga. 
ISTOLOGICAL mounts to exchange for other good slides. ‘T. B. 
STOWHLLE, Ph. D, Cortland, N. Y. 
XCHANGE.—I have a large number of vegetable mounts, single and 
double staining. Would like to exchange for any specimens of inter- 
est. MISS L. M. BERKEY, Grand Rapids, Mich. 
OR SALE.—Sections of human teeth with pulp in situ, $1.00. F. A. 
JACOBS, Newark, O. 
WILL exchange good, histological for other first-class mounts. §. G. 
SHANKS, M. D., 547 Clinton Avenue, Albany, N. Y. 
A. RICHARDS, of St. Louis, Mich., has for exchange a few mounts of 
e double-stained and single-stained vegetables ; also a number of well- 
mounted injected specimens. 
LEASE ANNOUNCE that I will supply labels. cards, and other first- 
class printing iv exchange for good slides) EUGENE 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. 
R. FASOLDT. of Albany, N. Y., has invented a new nose-piece. It 
will be advertised in future numbers of this journal. In the mean 
time address him at his home. 
OR SALE.—Zentmeyer’s histological stand, rack and pinion, coarse 
adjustment. Glass sliding stage with spring and screw. <A eye-piece, 
j5 and #¢ in, objectives. Stage and eye-piece, micrometer, neutral tint 
camera from Bausch and Lomb. Cost $70. Will sell for $55. New and 
unused. MAURICE A. MINER, Lake Geneva, Wis. 
XCHANGE—I have about one hundred lantern slides to exchange for 
Microscopical apparatus (object-glasses), ete W. 5S. WHITH, 128 and 
130 W. Main street, Kalamazoo, Mich. 
XCHANGE—A Tolles’ Binocular Eye-niece, (cost $80.00), for a first- 
class, wide anele Objective. J.T. MAIN, Jackson, Mich. 
CARI INSECTS, Pathological and other well mounted slides in ex- 
change for Pleurosigma, Trichina, Diatoms, Stained Bacteria, ete. 
J. O. STILLSON, Indianapolis, Indiana. 
