THE - CONCHOLOGISTS’ + EXCHANGE 37 
WANTED:—British and Continental Unionide ex- 
cept “‘batavus.’’ Offered:—British land and: fresh 
water shells. G.S. TYE, 1o Richmond road, Bir- 
mingham, Eng. 
MISCELLANEOUS EXCHANGES 
OFFERED :—Florida Moss, Woods, Palmetto, 
Alligator Teeth, Wild Boar Tusks, etc., for foreign 
shells, curios, etc. C.F. SULZNER, Palatka Fla. 
cena 
WANTED: Emu and Cassowary eggs in exchange 
for named shells. ID) ee 
WANTED: Perfect Echinoderms, for named shells. 
D. W. FERGUSON, 138 Wilson st. Brooklyn, N. Y. 
OFFERED:—100 british Wild plants, mounted on 
good paper, 16xro in. for correctly named microscopic 
slides. J. J. PORTER, Perranarworthal,Cornwall,Eng. 
TERTIARY and other fossils from Southern States 
and Europe; 50 species of Birds’ Eggs, and 60 pounds 
of Minerals consisting of Amethyst on Agate; Agates 
rough and polished: Pyromorphite: Native Copper: 
Zinc blende: Galena: rare Iron Ores, &c., &c., for 
strictly fine and correctly named Mollusca from South 
and Central America, Asia, Africa, and Australia. 
Address, W. D. AVERELL, 
Chestnut Hill, Philada., Pa. 
WANTED:—Histological and Pathological micro. 
slides. Dr. J. H. SMITH, 909 S. Charles st. Balti- 
more, Md. * 
WANTED:—A good work on Mollusca, fora be- 
ginner; not too expensive. Mollusca and curiosities to 
exchange. Send for list. EDWIN J. STEBBINS, 
Adrian, Mich. 
KIRBY’S European Butterflies and Moths, new, cost 
37 sh. 6 d. to exchange for telescope, album crustacea 
or other objects. JAMES ELLISON, Steelton, 
Leeds, Eng. 
BOOK EXCHANGE 
OPEN TO ALL SCIENTISTS AT THE SAME RATE AS 
““ EXCHANGES IN MOLLUSCA’”’ 
OFFERED:—Woodward’s Manual of the Mollusca 
75 Edition: Leidy’s Memoir of the Extinct Sloth Tribe, 
N. A.: Lea’s Syn. of Family of Naiades, ’52 edtn: 
Hays’ Descrip. Inf. Maxys Bones of Mastodons, 10 
plates: Agassiz & Gould’s Comp. Physiology: Bohn’s 
edt’n: Coultas, Prin. Botany, Cryptogamia: Lea’s on 
a Fossil Saurian of the New ed Sandstone Formt’n; 
Lesquereux’s Cretacceus Flora, 50 plates, Smith’n Mis. 
Col. Vol. 4, Neuroptera, Vol. 6 Diptera and Coleop- 
tera, 3 pp out. 
WANTED:—First 3 vol. Lea’s Obs. Genus; Unio: 
Say’s American Conchology: Gould’s Invertebrata of 
Mass: Kiener’s@plates of Shells: Carpenter’s works: 
Tryon’s Monog. Terr, Moll. of U. S., Sowerby’s 
Conch. Manual and Plates for offers in works on Con- 
chology. W. D. AVERELL, 
Chestnut Hill, Phila. 
OFFERED:—“A Manual of Zoology,”’ by M. Milne 
Edwards; ‘“‘A Manual of Blow pipe Analysis,’’ by 
Wm. Elderhurst, M. D.: ‘‘Sulphurets,’’ how concen- 
trated, worked and assayed. Wanted—a good copy of 
““Woodward’s Manual of Mollusca,’” and other works 
on Conchology. G. W. MICHAEL, Jr. Morro, Cal. 
WANTED:—Tryon, American Marine Conchology, 
colored edition. Offered—Sowerby Veneridce: Knorr, 
Hoorns en Schulzen. M. M. SCHEPMAN, 
Rhoon, near Rotterdam, Holland. 
WANTED in exchange, . any illustrated books on 
British Grasses and Mosses. TPP RO RATER 
Perranarworthal, Cornwall. ; 
OFFERED:—Cassell’s 
for good fossils or shells. 
‘Technical Educator, new, 
R. CAIRNS, 
Ashton-under-Lyne, Eng. 
WHAT offers for volumes II and IV, of Tpeiecteal 
Observer, and volume I, and 22 parts “of Popular Sci- 
ence Review. R. BROKENSHIRE, Oxford, Eng. 
OFFERED:—Fossils, Minerals, Magazines, etc., for 
type, rule. F. E. WETHERELL, Oskaloosa, Iowa. 
WANTED:—Scientific Books in exchange. G. W. 
HUMPHREY, Box 160 Dedham. Mass. 
THe WEST AMERICAN SCIENTIST 
moar Journal, established in 1884, begins a new volume as a 24-page illustrated monthly 
POPULAR SCIENCE 
A feature consists of articles on topography and natural history of Upper and Lower California 
magazine of 
Eminent Scientists are contributors. 
Price $1.00 per year, 10 cents a copy 
Send 25 cents for a g months’ trial subscription 
Agents Wanted 
Cc. R. ORCUTT, Editor, San Diego, Cal. 
