144 Cririons Geological Facts. 
this mineral termed genzculation. Insome 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. ‘Two spe- 
cimens feil in my way which had all the angles rounded, 
appearing as if they had suffered partial fusion. Instances 
of the reticulated variety were rare. 
The colour of the oxid, when 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 procured to receive 
specimens which may be presented. 
In accordance with the above 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 
im the new apartment devoted to the cabinet of Col. Gibbs, 
and of Yale College. 
it is understood to be the wish of the Society, that its 
members and others would forward specimens illustrative 
of American Geology and Mineralogy. ‘The names of the 
donors will be duly recorded, and their donations will be 
properly acknowledged. 
2. Curious Geological Facts. 
In the Quarterly Review for Dec. 1819, No. 43, p: 52, 
the following very interesting fact is ‘mentioned. It 1 is ih 
troduced in giving an account of the quarries of marble’ 
from which the blocks are taken for the construction of the 
celebrated Break-water at Plymouth, in England: “ The 
quarries are situated at Oreston, on the eastern shore of 
Catwater; they lie under a surface of about twenty-five 
acres, and were purchased from the Duke of Bedford for 
