30 
THE SCIENTIST. 
Prof Edvvard S. Da-i:iaiul many others. 
The work comes so highly recom- 
mended by the scieniitic press of the 
country generally that it seems idle 
for us to undertake to say more in its 
praise than has already been said. We 
would respectfully refer the reader to 
the advertisement of this magnificant 
volume on third page cov^rof this mag- 
azine. 
The Dictionary of Fossils just ])ub- 
lished by the Geological Survey of 
Pennsylvania is the most complete 
library for paljeontologists ever pub- 
lished in three volumes. It meets the 
long ielt wants of palaeontologists 
generally and especially those who are 
not so fortunate as to have access to a 
good public library, or be able to buy 
the volumes required to deter ujine 
the names of the fossils in an orditiary 
private collection. 
It is alphabetically arranged and un- 
der each name gives references to pub- 
lications first describing them; names of 
})arty making the description; also the 
geological group wherein found; and 
in most cases giving tine illustrations. 
The three volumes of the Diction- 
ary are uniformily bound in cloth and 
have about loOO pages and 3000 illus- 
trations. We are indebted to Mr. R. D, 
Lacoe for our copy of this valuable 
work on palic.intology. — S. J. H. 
Somewhere we have read that "A 
judicious and legitimate use of prin- 
ter's ink was a certain road to wealth." 
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vertising. The art of advertising in 
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tel, and graphically edited lilile mag- 
Hzine, having the suggestiv,? title of 
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Prlnttr's Ink comes weekly, 
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vestment, could the expert advertiser, 
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seventy-two crowded columns of Prbi- 
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