UST OF BUILDING STONES. 61 



121. Gray Granite. A dressed block, of a cubic foot. Barre, 

 Vt. From J. P. Harrington. 



126, 127. Gray Gneiss. Two blocks, from quarries at Tarry- 

 town, N. Y. 



128-130. Gray Granite. Three blocks, from quarries at Blue 

 Hill, Maine. 



131-137. Syenitic Granite. Seven blocks, showing varieties, 

 from Staten Island quarries. 



138-144. Gray Granite. Seven blocks, showing varieties, 

 from the Quincy Quarry, Mass. 



145. Dark Gneiss. A block, from quarry at Kipp' s Bay, K". Y. 



146. Gray Gneiss. A block, from quarry at Ravenswood, 



m y. 



147, 148. Gray Granite. Two blocks (coarse-grained), from 

 Frankfort, Maine. 



149, 150. Gray Granite. Two blocks, from Sullivan, Maine. 

 151, 152. Fine-grained Granite. Two blocks, from Mill- 

 stone Point, Conn. 



153, 154. Dark Granite. Two blocks, from Breakneck, N. Y.* 



155. Gneissoid Granite. A rough-dressed block, 11x6x5 

 inches. Monson, Mass. From W. N. Flynt. 



166. Gray Granite. A block 6x5|-x4 inches, with three sides 

 dressed. Concord, N. H. From the N". Y. State Library. 



163. Gneiss. A rough block, 10x11x6 inches. Luzerne, War- 

 ren Co.j.N". Y. From John Higgins, Troy, N". Y. 



164. Gray Granite. A block, 10x10^x10 inches, with one 

 face polished, one of rock fracture, and others of different 

 styles of dressing. Below Garrisons, Putnam Co., N". Y. 

 From A. Gracie King.f 



* The above twenty-nine blocks (Nos. 126-154 inc.) are in rough-dressed three 

 inch cubes. They represent the varieties of granite used in the construction of the 

 U. S. Dry Dock at Brooklyn, and were presented by William J. McAlpine, engineer. 



f This specimen of granite has been added to the collection while the report is 

 going through the press, and is introduced into the list as a granite worthy of 

 notice. The rock is of a light gray color, comparatively fine grained and breaking 

 with a clean crystalline fracture. In color and texture the specimen is superior 

 to any granite we have seen from the Hudson River Valley. 



