il DE CONCHOLOGISTS 
WHAT NEXT? 
Why just this. After May Ist, 1888, we 
will give each subscriber sending us 50 cents, 
a PREMIUM in choice 
LAND, 
FRESH WATER 08 
MARINE SHELLS, 
Make your choice of either of the three 
kinds mentioned, send us 50 cents by Postal 
Note, and we will send you, post-paid, 
“THE CONCHOLOGISTS EXCHANGE” 
FOR ONE YEAR, 
and a neat box containing 25 cents worth of 
choice SHELLS as a Premium; or, Berlin H. 
Wright’s New Check List of North American 
Unionidzee and other Fresh Water Bivalves 
(just issued); or, D. D. Baldwin’s Land Shells 
of the Hawaiian Islands. 
BUT WAIT! 
WE WILL GIVE 
To each person sending us 100 Fifty Cent 
Subscriptions with the cash, a Premium of 
$15 in Cash. 
To each person sending 50 cash subscrip- 
$7.50 in Cash. 
To each person sending us 25 cash subscrip- 
275 in Cash. 
Notr.—Subscribers’ names, together with 
the cash, must be sent to us as soon as received, 
to insure prompt delivery of the paper. 
Address, 
“The Conchologists’ Exchange,” 
Chestnut Hill, Phila. 
EXCHANGE. 
Flelix (Aglaia) fidelis, Gray, Oregon. 
WEST COAST SHELLS. 
3y Prof.Josiah Keep, Mills College, California. 
A familiar description of the Marine, Fresh 
Water and Land Mollusks, found in the United 
States, West of the Rocky Mountains. 182 
Illustrations, 230 pages. ‘The frontispiece is a 
hand-painted engraving of the very rare and 
beautiful 
Gabb. 
To aid in the study of Shells, the pronuncia- 
tion of the Latin names is indicated, and a Glos- 
sary, Key, Biographical Index of Naturalists, 
and a Check List are added. Beautifully printed 
and bound. Price, postpaid, $1.75. 
Samuel Carson & Co., Publishers, 208 
Post St., San Francisco, Cal. 
Please mention this paper. 
EDUCATIONAL REVIBW. 
A Monthly. 
Devoted to advanced methods of educa- 
tion and general culture, with special stress 
on Natural Science. Wood-cut illustrated 
lessons on Natural History, etc. 
EDITORS: 
PRINCIPAL MACKAY, B. A., B.Sc. (London), for 
Nova Scotia. 
ERAGE fo ANDERSON, Prince of Wales Col- 
e, for Prince Edward Island. 
PROF REGOn HAY, Ph. B., for New Brunswick. 
$1.00 PER ANNUM. 
G0: U. HAY. veh Bs, 
Sr. JouHn, N. B., CANADA. 
To whom all communications should be addressed. 
Surcula Carpenteriana, 
Managing Editor : 
