SOME LOCAL DKTAILS. ^^j 



of ]\I,/a fnninila, hut lliesc iive modem, and aiv the 

 "kitchen-middens" of the Indiiins, wiic in former limes 

 t'ncain])ed liere. 



Numbers of Pleistocene sliells may l.e picked up 

 along the shores of the two little hays\)et\veGn Caconna 

 and i:ivi('-iv-du-L(.u]): hut I fcund the most prolific 

 locality to he on the hanks of a little stream called the 

 I'etite l{ivi(']e-du-Lou]), which runs hetween the ridge 

 hehind (Vicouna and that of Mount Tilote, and empties 

 into the hay hetween l^iviere-du-Lou]) and the ])ier. In 

 these localities I collected and noticed in my ])a].er on 

 this ]»lace* more tnan eighty species, ahout thirty-six of 

 them not previously puhlished as occurring in thekeisto- 

 cene of Canada. 



AVe have thus at lliviere-du-Loup induhitahle evidence 

 of a marine houlder-clay, and this undei'lies the represen- 

 tative of the Leda clay, and rests immediately on striated 

 rock surfaces, the striae running north-east and south-west. 

 The Cacouna houlder-clay is a somewhat deep-water 

 deposit. Its most ahnndant shells are LcJa f/lm-ia/is, 

 ^|/rl/h fan/is, i\m\ Tcllina pmriuui,i\m\ these are imbedded 

 in the clay with the valves closed, and in as perfect 

 condition as if the animals still iidiabited them. At the 

 time when they lived, the Cacouna ridges nuist have been 

 reefs in a deep sea. Even :\Iount IMlote has huge 

 Laurentian l)oulders high np on its sides, in evidence 

 of this. The shales of the (,)uebec group were beino' 

 wasted by the waves and currents; and while there is 

 evidence that much of the fine mud \,,)rn from them was 

 drifted far to the south-west to form the clays of the 

 Canadian plains, other portions were deposited between 



* Canadian Naturalist, April, ISGo. 



