Che Conchologists' Cechange 
COPYRIGHT SECURED. 
Wor. rl 
CHESENUT Hiiticy PHILADEPHIA. PAT 
OCTOBER, 1887. No. 4. 
Ned. SA 
A Publication designed for Conchologists 
Scientists generally. 
ISSUED MONTHLY 
BY 
WM. D. AVERELL, 
Epvitor anp PustisHEerR 
8a5- Correspondence upon Conchology, as well as 
reliable items of interest concerning the Mollusca, 
their habits, localities, ete., kindly solicited from all. 
Matter for publication must be received by the 
tenth of each month. 
and 
TERMS: 
Subscription, Volume II. - - 
Single copies, 5 cents each. 
Remittances should be sent by Money Order, Postal 
Note, or by Registered Letter. Unused United 
States Postage Stamps will be received in amounts 
of $1.00 in payment of bills. 
Address all correspondence to 
WM. D. AVERELL, 
Editor and Publisher, 
Chestnut Hill. 
50 ets. 
Philadelphia, Pa., U.S. A. 
ADVERTISING RATES. 
One inch, displayed, 1 month............... $ 50 
One inch, displayed, 3 months............. 1 00 
One-half column, displayed, | month... 2 00 
One-half column, displayed, 3 months. 4 00 
One column, displayed, ] month.....,.... 4 00 
One column, displayed, 3 monies Piene-ss: 8 00 
Entered at the Post- office at Philadelphia, Pa., as 
second-class EAS 
SUBSCRIPTIONS TO VOLUME I ARE NOW 
DUE. FOR EXPIRATION OF SUBSCRIPTION SEE 
DATE ON WRAPPER. 
ONCHOLOGY to be made eeiaaly ee 
( must have the unqualified support of all 
its admirers and students. Successful 
study in this most useful and instructive 
branch of Natural History, can only be accom- 
plished by research of the plodding kind, by 
patience as vast as the regiorifto be explored, 
and by self-sacrifice as noble as that of the 
martyrs of old. It is of this last we wish to 
| 
| 
| 
speak, of a sacrifice of self which enables a man 
to be content with a small amount of work well 
done and really valuable, rather than the per- 
sistent nursing of that spirit of controversy 
which daily adds tier after tier to the Tower of 
Synonymy. The young student of Conchology 
is too badly entangled now with synonyms oad 
with the rival Gime of Professor This and 
Doctor That. What we desire to see as one of 
the first steps towards improvement, is the com- 
pilation of a complete Analytical Key, such as 
is used in Botany, and after the plan of Dr. 
Ruschenberger, who carried it to the Orders. 
Great is the task, but greater will be the honor 
conferred. 
Berore the streams freeze it would be well 
for our younger readers to avail themselves of 
the mild weather and secure recruits for the 
Winter aquarium. There is no better instructor 
in Conchology than 4 well-managed ‘‘ water 
garden,” for there you may see not only the 
shell, but its tenant, while living and active. 
One of the interesting sights in a shell aqua- 
rium is to watch a Lymnza eating the Cov- 
fervve upon the sides of the vessel. A dry gar- 
den for land shells, such as Helix, Pupa, &c., 
may also be attempted. Care should be taken 
to keep the aquarium from freezing. 
WHEN answering advyertisemefts do not fail 
to mention THE CONCHOLOGISTS’ EXCHANGE. 
It asks of its readers a careful perusal of its ad- 
vertising columns and a frequent use of the, 
menu there set forth. 
Don’? forget to tell your friends that if they 
wish to do you a favor, they should subscribe 
to THE CONCHOLOGISTS’ EXCHANGE, and help 
us to illustrate it in the future. 
IF you wish to secure our paper at 35 cents 
per annum, form a Club of five subscribers in- 
cluding yourself. 
. = : 
REMEMBER the watch-word—Subscribe. 
