AUTUMNAL WARBLER. 449 



with dull white, the three outer feathers white on the greater part of their 

 inner web. 



Length 4f , extent of wings 8 ; bill along the ridge ^, along the gap 

 ■J^ ; tarsus ^. 



Adult Female. Plate LXXXVIII. Fig. 2. 



The female resembles the male in external appearance. 



Canoe Birch or Paper Birch. 



Betula papyracea, Willd, Sp. PI. vol. iv. p. 464. Pursh, Flor. Amer. vol. ii. 

 p. 621, Mich. Arbr. Forest, de I'Amer. Sept. vol. ii. p. 133. PI. 1.— Mon(ECIa 

 PoLYANDRiA, i/inra. Amentace^, <7t««. 



Leaves ovate, acuminate, doubly serrated, the veins hairy beneath, 

 the petiole smooth. The female catkins pedunculate, pendent. This tree 

 is most abundant in the Northern States, where it sometimes attains a 

 height of from seventy to eighty feet, and a diameter of three feet. 



vf 



