TRAILL’S FLYCATCHER, 
235 
being in the month of April, I suspected the female had not begun to lay. 
Five of the eggs in the ovary were about the size of green peas. I could 
not perceive any difference in the colouring of the plumage between the 
sexes, and I have represented the male in that inclined and rather crouching 
attitude which I observed the bird always to assume when alighted. 
I have named this species after my learned friend Dr. Thomas Stewart 
Traill of Edinburgh, in evidence of the gratitude which I cherish towards 
that gentleman for all his kind attentions to me. 
Many specimens of this Flycatcher were procured by Mr. Townsend 
about the Columbia river, several of which are still in my possession, after 
giving one to the Prince of Musignano, who had not seen one before, and 
another to the Earl of Derby. 
Traill’s Flycatcher, Muscicapa virens , Aud. Orn. Biog., vol. i. p. 236 ; vol. v. p. 
Slightly crested ; wing rounded, with the third quill longest, second and 
fourth almost equal, first a little longer than sixth ; tail slightly rounded, and 
faintly emarginate ; upper parts dusky olive, upper part of head much darker; 
a pale greyish ring round the eye ; two bands of greyish-white on the wings, 
secondaries margined with the same; throat and breast ash-grey, the rest of 
the lower parts shaded into pale yellow. 
Male, 5f, 8i. 
Arkansas. Columbia river. Migratory. 
The Sweet Gum. 
Liquidambar styraciflua, Willd., Sp. PL, vol. iv. p. 476. Pursch, FI. Amer., 
vol. ii. p. 635. Mich., Arbr. Forest, de l’Amer. Sept., vol. iii. p. 194, PI. iv. — 
Moncecia Polyandria, Linn. — Amentace^e, Juss 
This species, which is the only one that grows in the United States, is 
distinguished by its palmate leaves, the lobes of which are toothed and 
acuminate, the axils of the nerves downy. In large individuals, the bark is 
deeply cracked. The wood is very hard and fine grained, but is now little 
used, although formerly furniture of various kinds was made of it. When 
the bark is removed, a resinous substance exudes, which has an agreeable 
smell, but is only obtained in very small quantity. 
