146 Mineralogy and Geology of a part of Nova Scotia. 
Passing beneath the trap in its immediate vicinity, it 
abounds with compressed and flattened mene s cavities, 
which, instead of the zeolites, are, when occupied, fille 
with rounded masses of gypsum, the mineral which usually 
occurs in this rock. These facts obviously tend to establish 
our theory of the origin of trap tuff and ainygdaloid, and 
render probable the explanation of these phenomena: that _ 
the quantity of trap present was inadequate to complete of 
= at this locality. 
s of gypsum, of practical worth, occur near the head 
of ie Basin of Mines, in the vicinity of the Subenacadie 
Riv yer, where also occurs a large bed of limestone, contain- 
ing the an and impressions of marine Pres ells, Itis of an 
ash grey color, and not very compact. one imen, 2 
few Sen sqettte of galena vere ane Sameie a 
This gypsum is of a bluish oe and is highly valued in the 
United States as a manure, although in its native country it 
does not appear to contribute in the least to. the fertility of 
the soil; in fact, the hills entirely composed of 
were not clothed with so luxuriant a crop of vegetation as 
those where this mineral was peal aig wien in. the soil. 
The trap rocks by their decay furnish a far more productive 
soil, as exhibited in t the township of Co Moats is, justly enti- 
tled, the “ Garden of Acadia,” a the whole extent of the 
base of the North Mountains. 
The gypsum in the vicinity of Windsor, abounds in those 
onieal or inverted funnel shaped cavities, supposed to have 
ongeeneatts: solution of rock salt, (muriate of soda,) 
which hae ates : d once to have occupied those spa- 
9 
ces. , or traces of its existence, were dis- 
Saeovihaane ts any exists it is unknown to the inhabitants. 
In one of ra caverns Soin ten or fifteen years since, the 
bones of a human — Eeppoees from the relics of arrows 
found with them, been those of one of the a 
" soe ‘were e discovered | in opening a on mnaat 
