On Subdivision by Trituration and Soliition. 49 
ny Others within its sphere of cohesion, some of their poles would 
be in a position favorable to union, and others be brought into 
that position by rotation, as would be the case with a multitude 
lege, thousands of instances of rotation, attraction, and induction, 
in the crystals of camphor formed from the tincture placed on a 
small plate of mica and exposed to solar radiation. When the 
sky was very clear and the radiation intense, the phenomena be- 
came confused by the rapidity of the crystallization, and it was 
necessary to dilute the saturated tincture with about five times its 
bulk of alcohol, in order that these phenomena might be exhibit- 
ed in all their distinctness and beauty. Thin clouds permitted 
lated masses more directly and efficiently to the dividing force, 
ut be ecnlisioneSewreis tunities for the reuniting force of 
cohesion to come into play, by keeping the newly divided parts 
read 
" y this rubbing process, the stratim of powder beneath the 
» aeons Szrirs, Vol. Vs No, 13.—Jan., 1848. pocorn ing | 
3 
TC 
