Editorial Comment. 17 
name and the scope of the Association we re, at the 
naturalists, both enlarged. 
IN. THIS HOUSE, THE HOME OF 
DR.EBENEZER EMMONS 
THE FIRST FORMAL EFFORTS WERE MADE, IN 
1838 AND 1839,TOWARD THE ORGANIZATION OF THE 
ASSOCIATION OF AMERICAN GEOLOGISTS 
THE PARENT BODY OF THE 
AMERICAN ASSOCIATION FOR THE 
s& ADVANCEMENT OF SCIENCE 
BY WHOSE AUTHORITY THIS TABLET IS ERECTED 
1901 
At the Denver meeting (1901) of the Association the com- 
mittee which had been appointed to consider the proposition 
reported favorably and their recommendations were unani- 
mously adopted by the council. The commemorative tablet 
of which a photograph is here reproduced, has now been put in 
place on the Emmons house. The committee in charge of this 
matter was John M. Clarke, C. H. Hitchcock, J. Mck. 
Cattell, W. J. McGee and Theodore Gill. The cost of the 
tablet has been borne by Dr. T. Guilford Smith of Buffalo, 
New York. 
REVIEW OF RECENT GEOLOGICAL 
LITERATURE. 
sches Praktikum, von Dr. RetnuHotp ReINisH. Erster 
Gesteinbildende Mineralien, mit 82 Textfiguren. Berlin, Gebrider 
S 
Borntraeger, 1901. Preiss 4 marks und 20 Pfennigs 
This is an elementary companion for students in petrography 
rock-forming minerals are distributed into groups according to t 
crystal systems, and their essential characters described and sor 
illustrated. It also includes a statement of their chemical 
and its chief variations, The microscope is supposed to | 
familiar to the student, as well as the attachmet 
