PLATE XX II I. 
STRUCTURAL DIAGRAMS OF SLATE QUARRIES IN EASTERN NEW YORK] 
AND WESTERN VERMONT. 
(A) Rising & Nelson's "sea-green" quarry No. 2, West Pawlet, Vermont. 
(B) Rising & Nelson's "sea-green" quarry No. 2, West Pawlet, Vermont, with meas- 
urements. 
(0) Hughes'- "sea-green" quarry No. 7, West Pawlet, Vermont. 
(I)) Robert R. Roberts's "sea-green" quarry, Pawlet, Vermont. 
(7?) Hughes's western quarry "sea-green," Pawlet, Vermont. 
i F) McCarty's "sea-green" and purple quarry, Poultney, Vermont. 
I G) Schmidt A: Williams's "sea-green" quarry, Pawlet. Vermont. 
(H) Enipire slate quarry (red), Granville, New Vork. 
I I i Auld A Conger's quarry ( "sea-green" and variegated), Wells, Vermont. 
(K) Griffith <k Nathaniel's quarry ("sea-green" and purple), Poultney, Vermont. 
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