121 



I. "Weight required to break the wood crossways. 

 II. Weight required to tear the wood asunder lengthways. 

 III. Weight required to crush the wood. 



The pieces for experiments I and II, were 2 inches X 2 

 inches X 30 inches. For experiment III, were cubes 2 

 inches ou each side. The average of six trials in each of 

 the ways brought out these results : — 



The White pine and Pitch pine are the most abundant 

 in Essex county. The Red pine is found only in very 

 limited quantities at Boxford, Georgetown, and the towns 

 in that vicinity. Yet we should be interested in the use- 

 fulness of this latter species, when considering trees for 

 cultivation. 



The Pitch pine as seen by Laslett's experiments has the 

 strongest w r ood, but for carpenters' work the White pine 

 is every way the best. 



The Pitch pine being used in joists and scantlings, 

 chiefly in ship building, and on account of its property of 

 withstanding alternations of wet and dry, it is a particu- 

 larly good wood for ship pumps, and for water-wheels. 



Laslett says, "the wood of the Red pine is not apt to 

 shrink, split, or warp ; it stands well, and is a valuable 

 wood for all kinds of construction, and in the domestic 

 arts there need be no limit to its application." Some of 

 the largest and straightest trees are used for masts and 

 spars. 5 



The Resin, and the various other substances which are 



6 Of the beauty and usefulness of the -wood of the White pine, it is quite un 

 necessary to speak here, the greatest difficulty would be encountered in endeavor- 

 ing to find what it could not be used for. 



