290 Miscellaneous Intelligence. 
On the Taconic system. By T. S. Hunt, Montreal. 
On some localities - Magnesite with remarks on its connection with 
the origin of Serpentine. By T. 8S. Hunt 
On the i Srrapiare observed in Potsdam Sandstone. “By 
SHEPA 
dl 
Remarks on the seventeen year rp ‘er ‘Miss Mor 
On the theories the Deluge in reference to the Ethnogenphie dise 
tribution of the human race. . P. Les.ey. 
On $ optical arectei of "American Micas. By Prof. B. Sina 
N, 
On in origin of a curious pd gy “he are in certain sedimen= 
tary rocks.. By Professor B. Sittim 
On the analogy between the mode “of nop taboetiens in plants and he 
ahereping generations of some Radiata, By Prof. James D. Dan 
ale. 
‘DeScription of the new genera of Plants found by Col. Fremont in 
California. By Dr. Torrey 
Fossil Coniferous Wood from the Devonian strata of Lebanon, Ma- 
Brass Co., Be. By Prof. Georce C. Scuaerrer. Read b y Dr. W. J 
URN ; 
PHYSICS AND MATHEMATICS. 
ae the origin and classification of Mechanical Powers. By Prof. 
. Josern Henry, Secretary of the Smithsonian Institution 
? Analysis of the Dynamic Phenomena of the Leyden ‘Jar. By Prof. 
a the ple principles of Dynamics. By Prof, BensaMIN 
‘ ee o ER E 
tha probable period of ihe fundamental star a Virginis. By P rof. 
.. PEIRC 
: ae alvantl wave time. By R. Cutmann, Bava 
4 ‘Description of an ab ine a exhibiting the dinade of vibration in 
* < “s 3 + molctl of unpolarized light. By Prof. E. 8. Snett, Amherst. 
‘ig ee ye On et distances. By Prof. W. N Cu AUVENET, of the U. 8. Na- 
‘ : t Cat ‘hand in the Gulf f of — 
5 = sa t U.S. Coast Survey. 
f Current : 
STED. 
ats of Sogtiont theery: By Prof. D. 
> pro perties es sompconds re) 5 
