NOTES ON THE TABLE OF TESTS 365 



The percentage of water absorbed by the dry stone, and 

 the weight of water per cubic foot of the stone, varies in 

 the several classes of stone as follows : 



Per cent of Weight of water, 



water. Pounds. 



Granites 0.066 - 1.55 o.i i - 2.62 



Marbles 0.08 - 0.16 0.14- 0.27 



Limestones 0.07 - 6.17 0.14 - 10.36 



Sandstones 0.82 -18.07 1.40-29.54 



Slate 0.15 0.26 



The larger number of sandstones and limestones, and the 

 few granites and marbles tested, make the comparative 

 capacity for absorption between these classes of stone 

 appear more variable, because of the disparity in numbers 

 being so great. The range in each class is wide, as 

 shown by the table. It will be noted, however, that this 

 variation in the limestones of the state, although large, is 

 not as great as it is in the sandstones. The total range of 

 the table is widened by the great absorptive capacity of the 

 oolitic limestones of the west, which are included in the 

 series. The granites, marbles and the limestones do not 

 absorb so much as the more porous sandstones. 



Arranged in the order of water absorbed, beginning with 

 the least absorbent, the sandstones stand as follows : 



Per cent 

 absorbed. 



Blue-stone, Bigelow Blue Stone Co., Maiden. Ulster county 0.82 



Blue-stone, Albert Shear & Co., Duanesburgh, Schenectady county.. 0.88 



Sandstone, Oxford Blue Stone Co., Oxford, Chenango county i . 11 



Sandstone, Potsdam Red Sandstone Co., Potsdam, St. Lawrence co. . 2.08 



Sandstone, Olean Blue Stone Co., Olean, Cattaraugus county 2.12 



Sandstone, Gilbert Brady & Co., Albion, Orleans county 2.37 



Sandstone, M. Scanlon, Hulberton, Orleans county 2.38 



Sandstone (coarse-grained), Brainerd Quarry Co., Portland, Conn .... 2.68 



Sandstone, Portage, Wyoming county 2 . 87 



Sandstone, Warsaw Blue Stone Co., Warsaw, W3^oming county 2.96 



Sandstone (fine-grained), Brainerd Quarry Co., Portland, Conn 2.98 



Sandstone, Bristow, Virginia 3.46 



Sandstone, Hughes Bros., Oswego Falls, Oswego county 3.53 



Sandstone (Kibbe), Norcross Bros., East Longmeadow, Mass 4-38 



Sandstone (Maynard), Norcross Bros., East Longmeadow, Mass 5.03 



