,XX. 



861 



though under 30 ft. in height, bears acorns annually ; which, however, do not 

 always ripen. 



B. Natives of North America. 



The American oaks being generally propagated in Europe by acorns im- 

 ported from America, we shall here give a comparative view of the acorns ol 

 some of the common kinds. Fig. 1560. represents acorns of the natural size, 



1566. Acorns of the natural size. 



of all the kinds that were imported by Mr. Charlwood of London, seedsman, 

 in the year 1836 ; but, that year being unfavourable for the ripening of acorns 

 in America, fewer sorts were imported than usual, and the nuts of these few 

 are under the average size. In this figure, a is the acorn of Quercus alba ; 

 b, that of Q. macrocarpa, with the cup on ; c, that of Q. obtusiloba ; d, Q. 

 /-Vinus tomentosa ; e, Q. P. purnila ; /, Q. tinctoria ; g, Q, nigra ; h, Q. 

 Phellos ; and ?', Q. palustris. Most sorts of the American oak in Messrs. Lod- 



