224 THE CANADIAN NATURALIST. [Vol. 



VI. 



near Madame Bruneau's residence; and an hour was allowed for 

 rest and refreshment. The various collections of plants were then 

 examined, and the following prizes were awarded : — 



For the best named collection in botany or zoology. No com- 

 petitor. 



For the largest number of species of flowering plants, unnamed. 

 1. Master Rankin Dawson, 21 species. 2. Miss Lovell, 13 

 species. 



Mr. Whiteaves gave a short verbal account of the objects of 

 interest met with in the department of zoology, after which 



The President of the Society, Principal Dawson, F.R.S., came 

 forward, and after a few remarks introduced Dr. T. Sterry 

 Hunt, who proceeded to give a brief notice of the Mountain of 

 Montarville and its geological history. This mountain, he said, 

 stands in the north-east part of the Seigniory of Montarville, and 

 being near the Seigniory and Parish of Boucherville is sometimes 

 known as Boucherville Mountain. The family Bruneau, the pre- 

 sent lords of the manor, to whose kind courtesy the Natural His- 

 tory Society was indebted for the privilege of holding its meeting 

 on the domain, have however caused the Parish Church near by 

 to be dedicated to St. Bruno, and hence the mountain or rather 

 the group of hills aro^ltid was now frequently spoken of as the 

 Mountain of St. Bruno. In proceeding to speak of its geologi- 

 cal history, Dr. Hunt remarked that Montarville has so much in 

 common W'ith the adjacent mountain of Belceil, which the Natural 

 History Society had visited two years since, that much of what he 

 then said would be equally applicable to the present occasion. 

 He next proceeded to describe the tw^o great classes of rocks into 

 which most of the solid portion of the earth's crust may be divided, 

 viz : stratified and erupted rocks ; the formed being chiefly layers 

 of sand, clay and carbonate of lime deposited as sediments from 

 water, and subsequently hardened into rocks, somewhat as mortar 

 and cement harden. These sediments, many thousand feet in thick- 

 ness, accumulated during ages in the subsiding bottom of the 

 ocean, and enclose the fossil remains of the various species of ani- 

 mals and plants which then lived. The erupted or non-stratified 

 rocks are found breaking through the stratified rocks of varioui 

 periods from the oldest to the most recent. They are composed 

 of crystalline minerals, chiefly difi"erent species of feld-spar, mica, 

 hornblende, pyroxene or augite, olivine and quartz. The nature 

 of these various minerals, and of the diff"erent rocks which are made 



