216 Association of Geologists and JYaturalists. [Nov., 



Sugar Maple ; Acer saccharinum. 



Tree, sound. Diameter, 3 feet from the ground, 28 inches, 12 

 feet from the ground, 21| inches. From the base to the limbs, 

 of bark, | inch. Age of the tree, 224 years, 12 feet from the 

 62 feet. Whole length of the tree, 107 feet. Average thickness , 

 base. The 100 outside layers taken for the ash of the outside 

 wood; the remainder taken to form the ash of the inside wood. 

 Growth, uniform. Average thickness of each layer, .044 of an 

 inch. Grew upon the lower part of the shales of the Chemung 

 group, in Cortland County, N. Y., 



Composition of the ash obtained from the wood 12 feet from 

 the ground. 



Poiash, 



Soda 



Chloride of sodium, 



Sulphuric acid, 



Carbonic acid, 



Lime, 



Magnesia 



Phosphate of per oxide of iron, 



Do. lime, 



Do. magnesia 



Organic matter 



Silica, 



0.3S 

 7.75 

 0.08 

 0.14 

 38.12 

 49.33 

 3.64 

 0.32 

 3.13 

 0.02 

 1.50 

 0.15 



8.77 



0.96 







.77 



37.24 



31.86 



8.40 



0.70 



5.70 



1.80 



2. 40 



0.50 



4.21 







O.ns 



0.31 



3:^.33 



43.14 



7.24 



1.34 



5.09 



0.22 



1.93 



0.55 



