AMERICAN 
URNAL OF SCIENCE AND ARTS. 
[SECOND SERIES.] 
. XXIV —On American Geological History :—Address be- 
+ fore she mage’ Association for the Advancement of Sci- 
republishing this addres, the author has added various 
ustration of the te The circumstances of the occa- 
in which it was auigcret edad the introduction of 
ied AN eaters Moreover, as the author aimed to give 
in 
both obligations to others as well as himself and oe science, aa hare 
lore prompted the introduction of the notes 
New Haven, September 10, 1856.] 
* * * ein oe * 
selecting a topic for this occasion, I have not been sinelie 
ex) aa Before an Association for the Advancement of 
se it urse on t. 
est he ignorantly gather for you noxious weeds. I 
fore, seca to pee en myself to a single ra “that 
SECOND SERIES, VOL. XXII, NO. 66.—NOV., 1566, 
39 
