186 William Gicen's Notes on the 
St: Lawrence at Jacques Cartier to three hundred feet and 
more above the level of the same river at Beauport, an in- 
terval of 4@ miles. In that distance the declivity of the bed 
of the §t. Lywrence towards the east is supposed to be 
feet. This declivity isin a directlon opposite ¢o that of the 
land adjacent to the St- Lawrence, which in that space is 
higher on both sides of the river towards the east and lower 
towards the west. 
The Beauport Limestone contains petroleum, mineral 
caoutchouc or elastic bitumen and numerous organic remains 
of marine amimals of several kinds. Among these are many 
of this form No- 7, some of which are more than a foot long. 
The cavities of these often contain or are filled with quartz 
which is sometimes white and epaque, sometimes translucent 
but smoky. The crystals adhere to the circumference, 
whence they converge—and when there is a cavity, the defi- 
ciency of matter is at and next the centre. 
This Limestone, by friction or percussion becomes teme 
porarily fetid. Burnt, it is often of a pale green hue, and 
in the state of quick lime it is seldom perfectly white, bat 
becomes so on being slaked. ‘The colour of the stone is dark 
grey, which weathering renders superficially much paler. 
Distinct lithographic impressions have been taken from it, 
but the darkness of its colour diminishes its utility by ren- 
dering obscure to the artist aad the printer the effect of their 
work during the process, especially while the stone is wet-— 
It is probable that in the numerous cases where red (instead 
of bieck,) ink might be used, as that colour would contrast 
sufficiently with the hue of the stone, this objection would 
disappear, and the stone become useful in this art- Many 
portions of it are very compact and fine grained, free from 
veins, spots and visible organic remains: Thin plates of these 
are souorous when struck. ‘The fracture of this Limestone 
is conchoidal. 
Whea 
