ArT. I—GuactaL GrEoLocy or Nova Scotia.— ‘By Rev. D. 
HonetyYMAN, D.C. L., F. B.S. C., F. S. Se, &e. 
Read November 2nd, 1887. 
ALTHOUGH engaged in Geological investigation in Nova Scotia 
for many years, I may say since 1860, I had found the super- 
ficial Geology altogether unattractive until the year 1875. On 
Her Majesty’s birthday of that year, while I was sauntering with 
a friend spending the holiday, on the shore of Cow Bay, on the 
Atlantic Coast, 9 miles east of Halifax (Vide Admiralty Charts 
of Harbor), I observed peculiar boulders of familiar rocks. These 
were different from the bulk of the boulders, which were, quart- 
zites, argillites and granites, derived from Lower Cambrian and 
associate rocks of the region. The boulders in question were 
amygdaloids having amygdules of zeolites, e. g. stilbite and heu- 
landite. The only rocks that could produce these in British 
America is a range of igneous 10cks connected with the Triassac 
Formation that lie north and west of Halifax. These rocks are 
celebrated for their minerals, which are found in all the American 
Museums, and of course in the British Museum. The question was 
asked by my friend: How did these boulders come here? I had 
seen similar boulders on the Avon Estuary, at Windsor, Nova 
Scotia, which my friend, Professor How, told me came from Blomi- 
don opposite. This headland is the eastern extremity of the range 
of rocks already referred to. I suggested that some vessel, 
which bad taken in ballast at the Avon, had thrown them over- 
board in the Bay, and that they had been washed ashore by the 
sea. Another and better answer was furnished when we came 
to Osborne Head, on the east end of the Bay. Here amygdaloid 
boulders were seen falling from the drift of which the Head is 
formed. Abundance were found on the beach at its foot. In 
the drift I found a beautiful boulder of moss agate. My associ- 
ate, Mr. Stirling, also found another specimen of this mineral on 
