GRADE VIII. 



The Juglans Nigra. 



" The Juglans nigra, or common black walnut, is 

 a very beautiful tree, the largest growing as high 

 as ninety feet and five feet thick. There are two 

 kinds of walnut growing in Massachusetts and only 

 about six in the world. The black walnut grows 

 in Massachusetts about one hundred miles from Bos- 

 ton, but grows best in Ohio, along the banks on both 

 sides of the Ohio river. It also grows on the banks 

 of the Alleghaney and Monongahela rivers. It 

 grows as far north as Massachusetts, and west of the 

 Alleghaney mountains it grows a little farther north, 

 about forty-four degrees north latitude. On the 

 numerous islands of the Ohio river they are found 

 very plentifully, fully as well as anywhere in the 

 country. It does not grow farther west than the Mis- 

 sissippi, and is not found anywhere in the old world. 



"The bark is of a light gray color and the layers 

 can be seen very plainly. The inner bark is of a 

 dark brown color and quite fibrous. 



"The wood, when green, is of a light color, near 

 the bark, but near the pith it is very dark brown. 

 When the tree grows older the wood turns darker, 

 and when the wood is dried it turns to a dark brown 



