56 «Petrified Wood from Antigua. 
road. ‘The country is of the secondary trap formation, and the . 
rocks, at the particular place, are the old red sandstone of — 
Werner, which here occupies the plains, and runs under the 
- trap. The piece weighs almost six pounds ; it is beautiful vir- 
gin copper, with rudiments of large octahedral crystals of na- ; | 
tive copper upon its surface, which is more or less incrusted — 
with green carbonate of copper and ruby oxid, very much re- 
sembling that of Cornwall: the ruby oxid is particularly re- 
markable in the cavities of the piece. 
As it was found within three or four miles of the place 
where the large piece of ninety pounds weight was discovered, — 
and as copper is known to exist in many places in these hills, 
the facts should be kept in view, and may lead to something of 
importance. 
Ant. VL. Petrified Wood from Antigua. 
Te mineralogy and geology of the West-India Islands has 
been, as yet, but little explored. The scientific world has, 
however, been favoured with some interesting articles from 
the pen of Dr. Nugent; and we are informed that he has de-_ 
scribed also the geology of the Island of Antigua. We have 
recently become acquainted with one interesting locality of this 
island, and without waiting for Dr. Nugent’s account, (whi nh 
we believe has not yet reached this country,) we shall lay it 
before our readers. 
We are under obligations to Mr. Pelatiah Perit, of New- 
York, for a collection of specimens of siliceous petrifactions of 
wood from Antigua. Their characters are indubitable; the 
distinct ligneous layers, corresponding with the annual growth, 
ihe medullary prolongations, the knots formed by branches, the 
cracks and the bark, are all distinctly visible. Some of the 
pieces are ponderous portions of large trees. 
As to the mineralizing matter, it is evidently siliceous, 
the specimens are principally the holzstein of Werner: crys 
tals of quartz. are apparent in the cavities: some parts 4 
and 
Fn oe oe een eee 
