170 GEOLOGICAL NOTES—HONEYMAN. 
Springhill and Parrsboro’ Railroad by excavating in part the 
passage through the Archzean and other formations, and also with 
furnishing ballast by the deposit of the obscuring drift. In this 
connection, I would observe that it may have had something to 
do with the formation of the great Boar's Back of Hebert River. 
This deposit is 7 miles in length. 
GYPSUM QUARRIES. 
We were conveyed to the extensive Gypsum Quarries, east of 
Windsor. The exposure of gypsum is truly magnificent. How 
or by what process these and similar deposits came into existence 
has certainly yet to be discovered. There isa large amount of 
Anhydrite, as well as hydrous gypsum. The first is bluish in 
color—a use for it is yet to be ascertained. The useful gypsum 
is white, and is principally used as Plaster of Paris. 
The borates (mineral) is a discovery of the late Professor How 
in these quarries. Specimens were collected. His representa- 
tive collection is in the Provincial Museum. 
On our way boulders of amygdaloids, crystalline rocks of the 
Cobequids, were observed on the road side. 
We left Windsor by the Railway Train at night and travelled 
to Halifax. As the rock sections of the Railway could not 
then be observed, I will describe them in inverse order from my 
Paper “On the Geology of the Gold Fields of Nova Seotia.’— 
Quarterly Fournal of Geological Soctety, 1862. 
We have (1) the Newport Gypsum (of the quarries visited) 5 
(2) half a mile of Lower Carboniferous Sandstone (underlying 
the Gypsum). This is unconformable to (3), quartzite (Cambrian 
of our Gold Fields), which extend 2} miles. Then come (5) 
Argillites (of the same formation). These extend 2! miles. 
Following (6) are cuttings of Quartzite to about a distance of 2$ 
iniles. We next have (7) Granites of Mount Uniacke; these 
extend to a distance of about 4 miles. In this there is a quart- 
zite parting. A farther distance of 14 miles are quartzite cut- 
tings. We have now reached 12 miles from the Junction. At 
Beaver Bank, the station next the Junction, are Slate Quarries: 
At the Windsor Junction the Quartzites appear in great promi. 
