Geology and Natural History. 61 
stone implements collected. The positions of many scores of 
saat ruined towns will be accurately indicated on the “ general” 
hese surveys . so far as they have been prosecuted, re- 
sulted in affording much information of great value to our people, 
orld. 
as well as to the scientific w e hehe Oe of a physical 
atlas of the Territories, which will pon all the results of the sur- 
veys as rapidly as they can be red for publication, is de- 
obtained; and if a continuation of the surveys should be author- 
ized, such an atlas would become, in time, of intrinsic value, not 
only to the people at large, but to other nations. 
In view of these and other considerations, I regard the mod- 
erate cost of these surveys as more than compensate ed by the value 
of the information thereby obtained, and therefore cordially 
recommend a ee of the United States geological sur- 
vey of “ou Territorie 
ere is not as ane ee as in some Roek ce Mountain views, 
but there is wonderful beauty of landscape, which is heightened 
by the pe a. a geben alper the ie and the well- 
— ridges. andl distant snowy ranges, are the different ele- 
ments in the views. They are from the Middle Park, the Grand 
Mancos, and near by M aime aan ruins of walls and other 
structures of stone in the vicinity of the same—the c dwelling and 
fortified places of a semi-civilized race now extin 
nthe more rapid deposition of Sediment in Salt “ in 
Sresh water.—Prof, T. Srerry Hunv, in nt article in the 
Proceedings of the Boston Natural History ae, calls sedan 
to the fact that the effe ct of salt in water on the rate 0 deposi sition 
"6. a boring at the St. Louis Insane Asylum.—Mr. G. 
C. Broapuxap, State Geologist of Missouri, gives the details re- 
Specting this boring, i in the Transactions of the St. Louis Academy 
of Sciences, vol, iii, 216. The whole depth is 3,843°5 feet; of this 
the last 40 ¢ oH were through Archean granite; above, the beds 
