OF THE MICROSCOPE. 
EXCHANGES. 
This department is for the benefit of suBsCRIBERS who have microscopical apparatus, 
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. 
XCHANGE—Good mounts of animal tissues, human and other, in health and disease, 
which I offer in exchange for books on BECTORE Oy. histology, pathology and bacteri- 
ology. Correspondence invited. . D. BONDURANT, Tuskaloosa, Ala. 
ANTED—A copy of Van Heurck’s work on Diatoms, bound or unbound. Will pay 
cash. ALBERT MANN, JR., Newark, N. J. 
ALICINE AND ASPARAGINE CRYSTALS.—Extra fine for polariscope. Will exchange 
for first-class miscellaneous mounts. Would like a slide of Trichina and Itch Insect. 
B. W. HASKINS, 1985 Euclid Ave., Cleveland, Ohio. 
J ANTED.—A copy of Rev. William Smith’s English Diatoms; also Schmidt’s Catalogue 
of the Diatomacez; also cleaned diatoms from Tampa Bay, Mobile and Nottingham. 
Will exchange or buy. JAMES B. SHEARER, Bay City, Mich. 
W2XEP.-vol III, No. 1, will pay 50 cents for it. Vol. V, No. 5; Vol. VI, Nos. 1 and 9. 
LANCET & CLINIC, 199 W. 7th St., Cincinnati, Ohio. 
OR EXCHANGE.—No. 6, Vol. II; Nos. 2, 4 and 5, Vol. Ill; Vol. 1V, complete; No. 1, Vol. 
VII; for microscopical ‘books or pamphlets. Protozoa or Rotifera desired. 
H. H. CODDINGTON, Kalamazoo, Mich. 
OR EXCHANGE.—Minerals and fossils, also sheet music for histological or pathological 
slides. Correspondence solicited. C. H. MERZ, M. D., Sandusky, Ohio. 
OR EXCHANGE—A good collection of shells, mostly American species (especially 
Californian). Wanted—Microscopical books, papers, material, apparatus, etc. Send 
. description of what you have to exchange. Have also collection of duplicates of above 
shells to exchange for same, or will sell both ai for cash. Address 
G. R. LUMSDEN, Box 98, Greenville, Conn. 
OR SALE CHEAP—Bunsen’s Spectroscope, cost $75. For description and price, 
address H. S. JEWETT, M. D., 215 Ludlow St., Dayton, Ohio. 
ANTED—TuE Microscop£, Vol. I complete ; Vol. If complete; Vol. III, Nos. 5 and 6; 
Vol. IV, Nos. 2,3, 4,5,8 and 9. Address 
PROF. H. M. WHELPLEY, St. Louis, Mo. 
INERALS AND ROCKS from Utah and adjoining regions; fine nodules, some polished 
and others rough; concretionary limestone, etc. In exchange for good miscella- 
neous mounts. Address 
PROF. J. E. TALMAGE, 32 Centre St., Salt Lake City, Utah. 
perems EXCHANGED, or - cleaned on shares. 
C.S. BOYER, Elm, Camden Co., N. J. 
W28TEp- vou IV, Nos. 8and 9. Address this office. 
ee SALE CHEAP—1i12 blue prints, plates of diatoms. Correspondence solicited. 
F. L. CAUCH, Dental College, Cincinnati, Ohio. 
ae ED Mesh containing trichina. Will exchange good mounts for same. 
J. C. FALK, 800 Morgan St., St. Louis, Mo. 
OR EXCHANGE—A $50 collection of Dr. A. E. Foote’s mineral specimens (300), for a 
good microscope. Address H. A. MUMAW, M. D., Orrville, Ohio. 
wu EXCHANGE histological slides for other interesting slides. 
A. F. BARNARD, Box 152, Oberlin, Ohio. 
O EXCHANGE —Diatomaceous earth from Nottingham and Calvert County, Md.; Los 
Angeles and Santa Monica, Cal., and Richmond, Va., for other diatomaceous material, 
crude or cleaned, recent or fossil (marine preferred). or for diatom or miscellaneous slides. 
None but good mounts wanted. ’. DUNNING, Battle Creek, Mich. 
ee EXCHANGE—Good histological or pathological mounts in exchange for other good 
mounts or material, general or special. 
S. G. SHANKS, M. D., 547 Clinton Ave., Albany, N. Y. 
