PLATE VI 



37- Balsam Poplar. 45. (1/ ) 



38. Balm of Gilead. 46. (V5) 



39. Cottonwood. 66. (V^) 



40. Lombardy Poplar. 68. (V^) 



Silver-leaf Poplar. 80. (2/3) 

 Red Bud. o. (1/2) '^ 



American Beech. 40. (Vg) 



5Q7 



