WHITE POPLAR. 3L7 



The principal veins which, diverging from the mid- 

 vein, are forked as they near the margin a vein 

 or fork proceeding to the apex of each lobe are 

 crossed by a series of veinlets that run nearly at 

 right angles with them in a course which can be 

 plainly traced on either side of the leaf; and 

 these veinlets enclose, between them, an elaborate 

 network of venules. 



Though the final colour of the autumnal leaves 

 of the White Poplar is a dark brown, there are 

 several preliminary stages of tinting which are 

 interesting and beautiful such as the normal 

 dark green contrasting, on the same or adjoining 

 leaves, with light brown, upon which a distinct 

 hue of red is discernible. Pale green, pale brown 

 and red, may be seen on the same leaf, and one 

 branch may show at the same time a rich array of 

 various shades and markings. But the colours 

 are very transient and extremely difficult to pre- 

 serve when the leaves have been gathered 

 from merging into the final and less interesting 

 stage of dark brown. 



In its general form, venation, and autumnal 



T 



