No. 200.J 199 
mass. The granite, in both of these cases, is sienite, and breaks into 
quadrangular blocks more or less regular. 
3 
No. 3, is a view ol the connexion of a bed of limestone and granite 
in Lyndhurst, Upper Canada, a, limestone, 6, granite. It will be per- 
ceived that this case is analogous to No. 2. The texture of the lime- 
stone ami granite are both similar to the same rocks in Gouverneur. 
4 
No. 4, exhibits an instance of the manner in which limestone branches 
into a granitic bed. It occurs near the preceding and in the same kind 
of granite. Cases of this kind are numerous, a a, limestone, 6, granite. 
6 
No. 5, exhibits another instance, or example, of veins of limestone 
projecting upwards through granite. They widen as they descend a a, 
limestone, h 6, granite. 
