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12 
THE - CONCHOLOGISTS’ : EXCHANGE 
Offered.—Fine specimens marine and land shells for 
perfect echinoderms. Land and fresh-water shells 
from the South and Southwest for reptiles in alcohol, 
D.W.FERGUSON, 138 Wilson Street, Brooklyn, N.Y. 
Offered.—Unio Leibii, Lea, and 75 other-species of 
N. Amer. land and fresh-water shells, Collectors please 
send lists and receive mine. JEROME TROMBLY, 
Petersburgh, Mich 
Wanted.—American correspondents interested in 
the study of the genus Pupa (including Pupilla, Vertigo, 
etc.), of the U.S. Duplicates and other shells for ex- 
change. V. STERKI, M. D., New Philadelphia, O. 
Offered.—Nassa vibex; Oliva literata, reticularis; 
Columbella mercatoria; Cypraea caput-serpentis, erosa, 
helova, lynx, moneta; Nerita tessellata, peleronta ; 
Fissurella| Barbadensis; Donax  variabilis; Dosina 
discus; Cardium magnum. Wanted.—Shells and 
works on Conchology, JOHN B. WHEELER, East 
Templeton, Mass. 
Cyclas dentata, Terebra dislocata, Sigaretus perspec- 
tivus, Sphzerium securis and striatinum, Zonites sup 
pressa, Helix fallax and many others to exchange for 
Land and Fresh-water shells. A. K. FAIRCHILD, 
Whippany, N. J. 
Offered: —15 species Unios including Aberti, 
purpuratus, Schoolcraftii, and subrostratus, 5 species 
Anodonta. Fossil Oyster Shells Satisfaction guar- 
anteed. Send list. FRANK J. FORD, Wichita, 
Kans. 
Marine Algew, Shells, Sea Curiosities, (all correctly 
named), for Alga, Shells, or Bird’s Eggs. All letters 
answered, S. R: MORSE, Atlantic City, N. J. 
Wanted :—Correspondence on Natural and Mental 
Science. For Exchange—‘‘ Livingstone’s Travels’’ and 
other good works for books. J. B. NICHOLS, Cazen- 
ovia, N. Y. 
L. S. Fossils fora good Phacops Trilobite, Steele’s 
Geology, Minerals or Ind. Relics of Slate or Copper. 
W.H. BEAN, Lebanon, O. 
_150—1st. class side-blown Birds’ Eggs to exchange for 
Coins, Stamps, fine specimens of Indian Arrow-heads 
and Minerals —WILLIS P. ARNOLD, Shannock, 
RI 
Offered: — Ensatella Americana, Petricola  phol- 
adiformis, Angulus_ tener, Say; Macoma fragilis, Ad.; 
Tottenia gemma, Tot.; Modiola plicatula, Urosalpinx 
cinerea, Say; Rissoa minuta, Purpura lapillus, Nassa 
trivittata, Lunatia heros, Melampus bidentatus, Unio 
nasutus, U. complanatus, Sphzrium rhomboideum, 
Say; S. partumerium, Succinea Totteniana, Lea; 
S. ovalis, Gould; Littorina, Odostomia, &c., for other 
shells. EDWARD W. ROPER, Revere, Mass 
| 
| specimens for Shells, Fossils or Minerals. 
Wanted :—To exchange Minerals, Birds’-Eggs in 
sets, land and fresh-water Shells for the same. E. M. 
| GOODWIN, Hartland, Vt. 
Fine Fossils and Shells for Ind. Relics and Fossils ; 
also Stamps and Coins for the same. JAS. W. JONES, 
Pt. Townsend, Wash. Terr. 
Ripidolite, Kyanite, Jasper, Albite, etc., all large 
No small 
H. I. CARD,Lock Box 54, Willi- 
specimens accepted. 
mantic, Ct. 
I will exchange fine Minerals for Fossils, Eggs, Min- 
erals, Ind. Relics, etc. WM.C. BANK, Cove Mills, 
Stamford, Ct. 
Offers requested in exchange for many of the 
smaller mollusks of the waters south of Hatteras. 
W. H. RUSH, M.D., 1308 Green St., Philadelphia, Pa. 
The West American 
Scientist. 
This Journal, establised in 1884, begins a new volume 
lasa 24-page illustrated monthly magazine of 
POPULAR SCIENCE 
A feature consists of articles on topography and natural 
history of Upper and Lower California. 
Scientists are contributors 
Eminent 
Price $1.00 per year, 10 
cents acopy. Send 25 cents for a 4 months’ trial sub- 
scription. Agents wanted. 
C. R. ORCUTT, Ebitor, 
San Diego. Cal. 
DO YOU WANT SPECIMENS ? 
Shark’s Egg . 5c | Chinese Chop-Sticks . 12c 
Star Fish . 5¢ ‘eee ois . 5c 
Sea Urchin . 5¢ | 5 Fine minerals. . . 1§c 
200 Sea Shells, small but good 15c; or 
COMMON SENSE 
a large 12-column paper devoted to collec- 
tors, a whole year, with any one of the above, 
for 25 cents. 4,000 copies each issue now. 
Large exchange column free to subscribers. 
| Send at once. 
F. A. THOMAS, Mexico, N. Y. 
