THE NAUTILUS. lll 
EXCHANGES. 
As a Premium, each subscriber is allowed an exchange of 25 words, including address. 
Exchanges printed in this column for 25 cents per 25 words, including address. Notices over 
25 words printed at the rate of one-half cent per word. No exchange inserted for less than 25 
cents. Notices which are merely indirect methods of soliciting cash purchasers will not be 
admitted to this department under any pretence. Terms, cash with order. 
Offered. —A herbarium of 1060 species Switzerland plants, 1750 specimens,sfor North Amer- 
ican Uniones or foreign (not European) Helices. V.STERKI, M. D., New Philadelphia, Ohio. 
Three specimens each of H. Nickliniana, Columbianus, and Vancouverensis, and a lot of 
Cala shells for same from Eastern and South Eastern States. Lists exchanged. JOSEPH 
BALOUN, Jr., 500 Montgomery St., San Francisco. 
~ Wanted.—Correspondents interested in the study of the Mollusca of Colorado, Wyoming, 
Utah, Arizona, New Mexico, Kansas, Indian Territory and Nebraska. THEO. D. A. 
COCKERELL, West Cliff, Col. 
~ Offered. —70 species of inland and 50 of marine shells for other shells. Send your list for 
ours. JOHN M. HOLZINGER, Winona, Minn. Crowe ; 
Offered.— 300 species land, fresh-water and marine shells in exchange for others. Correspond 
in Volapuk where possible. A. A. HINKLEY, DuBois, Ill. 
Offered.— Unio iris, clavus, occidens, triangularis, etc. Marg. calceola, marginata; Ano. 
ferruginea, decora, pavonia; Mesodon multilineata exoleta, elevata, thyroides, etc. Patula 
solitaria, alternata ; Succinea obliqua, ovalis ; Triodopsis palliata, inflecta, etc 
Wanted.— Fossils and land, fresh-water and marine shells. A.J. PHINNEY, Muncie, Ind. 
Wanted.—Murices, Terebras, Mitras, and Marine Bivalves in fine condition, in exchange 
for 200 duplicates of Mediterranean, African and American dredged shells. WM. D. AVER- 
ELL, Mt. Airy, Philadelphia, Pa. 
Offered.—Unio alatus, Say, plicatus, Leseuer, fragosus, Con., trigonus, Lea; Marg. com- 
planata, Say, and many others, for marine shells. JOSEPH ANDERSON, Box 1955, 
Muskegon, Mich 
A Perfect Fountain Pen 
for 75 cents. 
The only Fountain Holder practical with Steel Pens. We guarantee these pens to give 
perfect satisfaction. Sent post-paid on receipt of price. Address, 
W. B. BENSINGER’S SONS, Tamaqua, Pa. 
THE CANADIAN BNTOMOLOGIST. 
Published by the Entomological Society of Ontario. 
ANNUAL FEES OF MEMBERSHIP. 
For Ordinary Members............-+esseeeeseeees $1.00 | For Associate Members in England, 4s. sterling 
For Associate Members in the U.S........... 1.00 | For Associate Members elsewhere... ...... $1.25 
The Fees are payable in advance on the 1st of January in each year, and their payment 
entitles the members to a copy of all the Society’s publications during the year, including the 
Illustrated Annual Report made to the Ontario Government. 
Remittances may be made in the form of Express Order, Postal Note, Canadian, U.S., or 
carte Stamps, P.O. Order or draft on New York, but cheques on local banks will not be 
receive 
All remittances and other business communications should be addressed to the Secretary- 
Treasurer of the Society, W. E. SAUNDERS, 240 Central Ave , London, Ontario. Send all 
manuscript for publication to the General Editor, Rev. C. J.S. BETHUNE, Port Hope, Ont. 
THE wWHST AMERICAN SCIBNTIST 
Will hereafter be published by the undersigned. Mr. CHARLES R. ORCUTT of San Diego 
will continue as its editor. 
First issued as a four-page monthly in 1884, this magazine has steadily grown in merit and 
popular favor until it is now in the forefront of the scientific magazines of the country. 
SAMUEL CARSON & CO., 
Publishers, Booksellers and Stationers, Wholesale and Retail, 
208 Post St., San Francisco. 
“Frank H. Lattin, of Albion, Orleans Co., N. Y., a dealer in natural history specimens, 
instruments, supplies and publications of all kinds. Every A. A. Chapter should have a copy of 
his complete catalogue and price-lists before making purchases. His specimens are the very 
best, and his prices will be found to be much lower than those of any other reliable dealer.”’ 
The above we copy from Three Kingdoms, the Hand-Book of the Agassiz Association. Our 
readers would no doubt save money by complying with President Ballard’s advice. 
THACH ERS’ REPORT CARDS. 
Send for Samples to PEO PLE’S REGISTER, Chambersburg, Pa. 
HAT HAVE YOU TO EXCHANGE for a Catarrh Remedy that never Fails? 
Address, Mrs. E. E. Yates, Sharon, Wisconsin. 
