126 The Ottawa Naturalist. [September 



especially from the west side in each of these valleys which 

 form part of the hydrographic basin of the Gatineau River 

 there was a glacier. Along the banks of LaPeche River at 

 Wakefield, where the Club held excursions on more than one 

 occasion, similar strias occur on the hard Archaean floor ; 

 they indicate clearly the existence of a local glacier which fol- 

 lowed the course of the Peche River, as the direction of the glacial 

 striae indicate. These local glaciers were probably all united at 

 one time with the larger and more important one, along 

 the Gatineau Valley, which itself can be called the Gatineau 

 Glacier. Its markings are seen all along the sides of the 

 valley, as far as Ottawa city, near New Edinburgh and Rock, 

 liffe, especially at the latter place. Huge boulders were 

 transported and lodged firmly and deeply into the Chazy 

 measures of the then existing shore cliff of the Ontario 

 side, or transported over the bluff into the country south and 

 east of this great Gatineau glacier. It was at this time, during 

 the Glacial Epoch, that the glaciers proceeding from the Chelsea 

 Mountains, wended their way from a high altitude, to 

 the cliffs north of Ottawa city, entering the areas now 

 covered by the embayments along the shores of the Ottawa 

 River at the Supreme Court Building, along the line of the Canal 

 locks below, along the Governor General's Bay, where there are 

 distinct dislocations or faults in the strata of the Pakeozoic rocks 

 there present, thus affording an easier passage, and offering less 

 resistance to the action of the glacier coming from the north-west^ 

 The evidences of glaciation from the slopes of the Chelsea Hills 

 to Ottawa City and over the surface of the Trenton and Utica 

 formations of Hull and Ottawa are everywhere visible. Not 

 only are there the usual stride, but crescentic cross fractures are 

 also present, chatter marks and various other markings and 

 grooves, all well-known phenonema of ice-action. 



Besides these markings observed at Chelsea, which suggest 

 such a multitude of interesting notes on the glaciology of the 



