. Cassell's natural history . FIG. 9.—FEATHERS OF A BIRD. an ulna (is) and a radius (c), which is very slender. The ulna has often a row of tubercleson the upper surface, denoting the situation of the barrels of the secondary quill feathers,to -n-hich it j-ields support. The hand is dix-ided, as usual, into carjms (d), mcfacarpus (e), ; but, so far from being flexible, as the name suggests, it is a firm, inflexible 12 THE FEATHERED TRIBES. basis for a series of stiff clastic feathers eontinuous witli those proceeding from the the anterior edge, and at the base of the metuc
. Cassell's natural history . FIG. 9.—FEATHERS OF A BIRD. an ulna (is) and a radius (c), which is very slender. The ulna has often a row of tubercleson the upper surface, denoting the situation of the barrels of the secondary quill feathers,to -n-hich it j-ields support. The hand is dix-ided, as usual, into carjms (d), mcfacarpus (e), ; but, so far from being flexible, as the name suggests, it is a firm, inflexible 12 THE FEATHERED TRIBES. basis for a series of stiff clastic feathers eontinuous witli those proceeding from the the anterior edge, and at the base of the metucarpns, is seated the thumb bone, a singlejointed piece (f). The fingers (g) are two ; the first consists of two phalaixjcs, a broadbasal bone, as if several were compacted into one, and a small pointed bone. The secondfinger consists merely of a small portion in close contact with the iirst ]>/iahiiu of the first p». FIG. 10.—WING or X BIRD. finger. The hand, thus formftl, has no such power as we ascribe to that organ; it is afirm, inflexible support for a scries of stiff elastic feathers continuous with thos? proceed-ing from the u/iui. The feathers arisuig from the hand and ulna are termed quill-feathers. They aredidded into two sots. One set arises from the hand, consisting of the most important of
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectbirds, bookyear1854
