Ae Cancholonsts Exchange. 
COPYRIGHT SECURED. 
Worle 
CHESTNUT HILL, PHILADELPHIA, PA:, SEPTEMBER, 1887. 
No. 3 
A Publication Designed for Conchologists and 
Sctentists generally. 
LS SU Ey MO NACE LY 
BY 
Wi Aw ERELL, 
Epitor AND PuBLisHER 
f@- Correspondence upon Conchélogy, as well as 
reliable items of interest concerning the Mollusca, 
their habits, localities, ete., kindly solicited from all. 
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SUBSCRIPTIONS TO VOLUME II ARE NOW 
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DATE ON WRAPPER. 
HAT the antipodes will not be behind in 
the struggle for scientific knowledge is a 
foregone conclusion, In a region where 
Nature has been so lavish in her gifts, as 
in Australia, one would expect to see a wide- 
spread interest in Natural Science. But not 
until very lately has the scientific education of 
the young commanded the attention which its 
“iraportance deserves. So far as Conchology is 
concerned, much has been done by Reeve, Phi- 
lippi, Kiener, Hombron, Angas, Cox and others, 
but we think the visit of Baron Maclay has had 
much to do with stirring up the lagging inter- 
est. Mr.-John Brazier has kindly furnished us 
with the Rules of The Natural History Associa- 
tion of New South Wales, one of which de- 
clares the object of the Association to be ‘‘ the 
encouragement of the study of nature, more 
particularly by young people,” in which laud- 
able enterprise we cannot but signal them “to 
go ahead at full speed.”’ We may be far ahead 
of them in our Agassiz Chapters and kindred 
societies, but their country is comparatively un- 
explored, and is in addition very rich in pecul- 
iar and unique forms of life. 
We confess to have read Mr. Charles T. 
Simpson’s article upon “ The Distribution of 
Shells in the Tropics,” with great interest. 
We cannot but deplore the work of a natural 
force which no doubt is the cause of so many 
migrations among mollusks. A trip to a new 
region has added zest given to it when new 
forms are discovered, new brain-food is found, 
new light thrown upon murky subjects. But 
when, after a tropical storm such as Mr, Simp- 
son so aptly describes, the coast becomes the hab- 
itation of species collected and described 
months before in a distant region, the occasion 
loses interest. The word “introduced” is be- 
coming far too common, and whether done by 
man or a storm the abstract effect is the same. 
But such is Natural History; we must record 
facts, and perhaps the 1ffost curious element of 
our work is the phenomenon of distribution. 
Mr, Simpson’s argument is strong, well taken, 
and we think highly plausible. 
Ir every subscriber to THE CONCHOLOGISTS’ 
EXCHANGE would send at least one new sub- 
scriber’s name to the paper it would greatly 
encourage us, and be returned with interest. 
SUBSCRIBE to THE CONCHOLOGISTS’ Ex- 
CHANGE, 50 cents per annum and three free 
exchanges. 
