136 Scientific Intelligence. 
continent south of 37° of S. latitude both on the Atlantic side 
(Bay of St. Matthias, and the Pacific side. At Talcahuano large 
erratic boulders and roches abe AO were observed at the mouth 
Vin- 
cente (between Concepcion Bay and ‘Gh Bay of Aranco) glacial 
markings were found by. Mr. Pourtales, at the sea level—“ a mag- 
nificent polished surface,” says Prof. Ag gassiz, “as well preserved 
as an ave seen under glaciers of the present day, with — 
marked furrows and scratches ;” and this is in latitude 3°°. 
place is only a few feet above tide level, upon the slope of a hill 
n which stand the ruins of a Spanish fort. The course of the 
scratches is nearly east and west ; but some cross the main trend, 
- and runsoutheast. The magnetic variation at pach emer is 18°3', 
the true meridian being to the right of the magnet 
6. Annual Report of Prof. D. oE Boyd, Savesntediais of the 
Louisiana State University, for the year 1871, to the Governor of 
the State of Louisiana. 233 pp. 8vo. New Orleans, 1872,.—This 
Geological ‘Serooy of the State by | “ V. Horxiys, M.D., Prof. 
Geol., Chem. and Min., in the Universi 
In the Geological Report, Prof. tes ins gives many inp : 
facts with regard to the ge opens deposits, and also a colo red 
geological map of the State. The Post-tertiary is eg to con- 
sist, following the order of age, of (1) the Drift, (2) the Port Hud- 
son group (so named by Hilgard), (3) the Loess, (4) the Yellow 
oam. ‘To the last three the term Bluff formation is here ap- 
plied; and it is stated that “the delta formed by the se 
from the end of the Drift period to the era of the Loess was 
posed of its strata.” 
The beds of the Port Hudson group are mostly hard sand-beds, 
sandy-clay and were: they are more or less calcareous, and are 
often characterized by calcareous concretions. e thickness at 
the ee welle of rea is 160 to 282 feet. Pro Hhilg a 
in the southern part, and fresh water shells in some aac The 
of the po cent fg Lignite layers also oceur in it, and 
Setacaeee sot ge mps. 
The | sovats a fine silt, sos compacted. The water of 
slight ‘ai is is whsor ed into its porous beds, while heavier flows 
Vyclostoma, Achatina, and Suecinea, as long sinee observed near 
N atohen “ar Lyell; and sometimes affords bones of the mastodon. 
