PROCEEDINGS OF SCIENTIFIC SOCIETIES. 497 
ed Mihe crystals of one, and often of several minerals, ae 
Bic, great beauty of appearance. gee former of these (No. 1) is 
abundant in the Niagara limestone of the New York State Survey; while 
latter (No. 2) occurs in profusion in the limestones of Indiana, Mis- 
my distinction called geodes b AN writers. 
That the two objects, so Eee ee eae os known by 
distinctive names see elf-evide present usage of 



do, is productive of extreme confusion, while the practice is not justi- 
by any apparent necessity whatever.—R. W. Haskins, Buffalo, N. Y. 

PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE. — NATU- 
History SECTION. Chicago, I ll., August 5-12, 1868. Gen. G. K. WAR- 
One hundred and ten miles below Big Stone lake, is partially gran- 
» Big Stone lake occupies wpa miles of this great excavation, and 
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> excavate the valley of the Mississippi, he must admit their insuf- 
sa n fact these feeble streams, so far from having made this 
AMER. x4 “ang are doing kati best to fill it up. 
: TURALIST, VOL 63 

