144 — Curious Geological Facts. 
this mineral termed genvculation. In some cases a crystal 
was bent at but one angle; in others at many—and in others 
still, while the specimen was perfectly straight and smooth 
on one side, the opposite was marked by many flexures, a 
part only of the molecules, having apparently been subject 
to the law that determined to this angular form. ‘T'wo spe~ 
cimens fell in my way which had all the angles rounded, 
appearing as if they had ones partial fusion. Instances 
of the reticulated variety were rare. 
The ¢ colour of the oxid, per tar taken from the interior of 
the masses in which it was imbedded, was a beautiful red, 
often accompanied by translucency ; but that more exposed 
to the weather was commonly opake and almost black. 
P.S. The Virginia titanium, although infusible by the 
common blow pipe, melts under the flame of the compound 
blow pipe of Prof. Hare, but is not reduced to the metallic 
state 
The Society directed Cases to be enemeee to receive 
specimens which may be presented. 
In siceciletitse with the abave direction, provision is now 
made to preserve and display a collection as fast as it shall 
be formed. By permission it will be located for the present 
in the new apartment devoted to the cabinet of Col. Gibbs, 
—_ of Yale College. 
denoss will be duly dnl os prin their donations maa be | 
properly acknowledged. 
2. Curious Geological Facts. i 
In the Seoncnaiy Review for Dec. 1819, No. 43, pe 52, 
the following very interesting fact is mentioned. It is in- 
troduced in giving an account of the quarries of marb! 
m which the blocks are taken for the construction of the 
celebrated Break-water at Plymouth, in England: “ The 
— are situated at Oreston, on the eastern shore of 
atwater; they lie under a surface of about twenty-five 
acres, and. were purchased from the Duke of Bedford for 
