50 
and soda occurred asa beautiful network of colourless trans- 
parent bladed crystals on the side of the bostonite dyke 
along its contact with the limestone. 
These dykes, which were so well exposed when the 
reservoir was in course of excavation, are now concealed 
beneath its waters, except where some of them intersect 
the cliff behind the reservoir, but even here they are now 
but indifferently seen, being concealed by the vegetation 
and by the wash from above. 
On Pine avenue the Trenton limestone is well exposed 
and is cut by a few small dykes. Above this, the road, 
winding up the mountain side, passes over almost contin- 
uous exposures of the same limestone in heavy beds dipping 
at a very low angle to the south until the level of the upper 
reservoir is reached. 
Here the Trenton is overlain by a hornstone, represent- 
ing a remnant of the Utica shale which lies immediately 
against the essexite, by which it has been intensely altered. 
Climbing a steep declivity over this highly altered 
Utica shale, the essexite which forms the greater part of 
Mount Royal is reached. This is well exposed near ‘‘the 
Lookout”’. 
From this Lookout, if the day is clear, a magnificent 
view may be had over a portion of the St. Lawrence 
lowland, with the River St. Lawrence flowing through it, 
and the city of Montreal situated by the side of the river, 
at the head of navigation for ocean-going vessels. It 
was probably from about this point that Jacques Cartier, 
the first white man to ascend the St. Lawrence, stood 
when in 1535 he looked over the same landscape, and, 
here later explorers believing that it must be the land of 
Cathay for which they were in search, exclaimed: “C’est 
La Chine,” a name (Lachine) which has ever since that 
time been borne by the rapids which impede navigation 
just above the city of Montreal, as well as by the little town 
which has grown up beside them. 
Standing here on Mount Royal, all the other Montere- 
gian Hills are in full view and form striking features in 
the landscape. These are, in their order, Montarville 
(St. Bruno), Beloeil, Rougemont, Yamaska, Shefford 
and Brome, while further south the intrusive plug of 
Mount Johnson is seen, isolated and rising abruptly from 
the plain. 
