THE BLACK-THROATED GREEN WARBLER. Tus is a very rare, but beautiful species of warbler. It is about four inches and a half in length. The chin and throat to the breast are black; sides under the wings spotted with the same ; breast and belly white, tinged with pale yellow ; the wings dusky with two white bars, there are white spots on the tail. The legs and feet are brownish-yellow ; the bill black. In the spring this bird may be seen searching for its food amid the white blossoms of the apple-tree. It is so familiar, that it does not seem alarmed if a man stands (90)