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thin at the tip, with their apical margins ronnded and smooth. 

 Seed with wing. 9 inches long, light brown in color. One of 

 onr most important commercial trees, which is being planted 

 in great numbers in Massachusetts for lumber purposes. 



Pitch Pine {Pinus rigida). — Leaves arranged in clusters 

 of three, each leaf being long, rather stout and roughened by 

 a row of serrations along three of the margins, the teeth 

 pointing toward the tip. Green, with narrow rows of white 

 spots on all the sides. Bark of young shoots yellow brown, 

 not pubescent ; its general appearance rough on account of 



