200 
[ Assembly 
No. 6, exhibits 4 thinner veins of the same character as the preced- 
ing, a a, limestone, b b, granite. 
7 
No. 8, is a ground plan of a series of veins connected with 
other. The four last figures are taken from a field in Gouverneur, 
the celebrated locality of Phos. Lime, a, limestone, 6, granite. 
