* 
282 Scientific Intelligence. 
The principle I ay exemplified above may not be novel; bata 3 
have never met wi chemists, as well as manufacturers (( 
colors), will probably aos find it of interest, and certainly highly pat 
were and easy of executio : 
eekman street, New York, Feb, 3d, 1860. 
eekly. Price 3d., stamped 4d. 8vo. 12 p. each number. This 
Saligere heapeos! « on the 10th of December ee and eight 
have already reached us. The contents are divided under Scientifie 
ihre Chemistry, Technical Chemistry, Pharmacy, Toxicology 
Proceedings of Societies, Notices of Patents. ts, Correspondence, Scientif 
Notes and F Guesten Laboratory Memoranda, Miscellanies, ‘a Answers 
to Correspondents. Mr, Crookes is favorably known by several valuable 
br pa and thus far has shown good judgment and spirit as an 
batim spars of the late lectures of Dr. F Faraday (the Ho 
jation of the 
1 860. 4to Sone chiefly special and Shelly a its ot 
this Journal (which has now reached its 4th sabia it to ral 
is conducted by Mr. Mayer and others, in a manner ntitle 
as a valuable coadjutor in technical chemistry. 
II, GEOLOGY. 
. On some of the Igneous Rocks of Ce 
PR S. (In a letter to one of the editors, ot a es so nf 
curs in the district of Montreal a series <u isolated hills sep peer 
east and west for a distance of ninety miles along the ine of ae’ 
lation which has disturbed the lower Silurian strata. ese 
composition. Prominent among the 
which in their various types of comp sen F 
itoid are abundant. e mountains 2 
