COPYRIGHT SECURED. 
Che Conchologists Exchange, 
WOMEN Es 
CHESTNUT HILL, PHILADELPHIA, PA., SEPTEMBER, 
1886. INO Bs 
A PUBLICATION DESIGNED FOR CONCHOLO- 
GISTS AND THEIR INTERESTS. 
WM. D. AVERELL, 
EDITOR AND PUBLISHER. 
Printed by Joun C. Crark & Sows, Stationers and 
Printers, 228 and 230 Dock Street, 
Philadelphia, Pa. 
Correspondence upon Conchology, as well as relia- 
ble items of interest concerning the Mollusca, their 
habits, localities, etc., kindly solicited from all. 
Matter for publication must be received by the 15th 
of each month. 
TERMS: 
Subscription per Year, - - - - 25 Cents. 
To Foreign Countries, -' - 3 oC 
Single Copies, 3 Cents Each. 
CLUB RATES: 
3 Copies One Year, - - - § .60 
“ef « “ce 
- - - «go 
Be ry « e Be ee en I bs 
20 c ce ce e - 3 00 
Remittances should be sent by Money Order, Postal 
Note or by Registered Letter. Please make Bank 
Drafts and Money Orders, and address all subscrip- 
tions and correspondence to 
WM. D. AVERELL, 
Chestnut Hill, 
Philadelphia, Pa., U.S. A. 
Advertising Rates given on application. 
EDITORIAL. 
Mr, Bryant Walker of Detroit, Mich. writes 
in regard to the reception of his circular of 
September, 1885, which was issued for the 
purpose of securing information about the 
_ distribution throughout the United States and 
~ Canada, of all the species of land and fresh- 
water mollusks common to Great Britain and 
North America, including also such species as 
are closely allied if not identical with corre- 
sponding British forms :— A large number of 
replies were received and forwarded to Mr. 
Taylor, (Editor of the Journal of Conchology, 
Leeds, England, Ed.), which covered the 
ground quite satisfactorily. The extreme points 
from which information was received being 
Massachusetts and Florida on the east; and 
Washington Territory and California on the 
west. The greatest lack however was in 
reference to the Gulf States. Mr. Taylor’s 
Monograph has not yet been published. Any 
further information would be very acceptable. 
I'shall be glad to send a copy of my circular to 
any one who would be willing to aid Mr. 
Taylor.” 
We wish Mr. Walker the greatest success 
in his laudable efforts in aid of Mr. Taylor’s 
project, and we hope that those of our readers 
who can send or influence the information 
lacking from the Gulf States, will do so at 
the earliest possible moment. 
So many kind letters have been received by 
us from friends all over the Country testifying 
to the good fortune “THE CoNCHOLOGISTS’ 
EXCHANGE” has brought to their doors, that 
we have reluctantly abandoned the idea we 
first had of publishing a number of the letters 
| received, as the kind wishes expressed would 
fill the paper. Some have closed out all their 
| duplicates; others have made fewer exchanges, 
but write us they have made valuable, and we 
trust lasting friendships. This is very encour- 
aging to us, and we talee this opportuniiy of 
thanking you one and all for your many favors 
and trust you may not only support our little 
paper but induce your friends to do the same. 
No late works have been received with 
more general satisfaction than have ‘ Structural 
and Systematic Conchology”’ and ‘* Manual of 
Conchology,’’ edited and published by Prof. 
Geo. W. Tryon, Jr. The call at present is for 
works describing the latest developements of 
Science and the idea is realized in these stand- 
ard works. Students of all degrees of fortune 
