Feb. 16 /69/ In a whole «in other birds^t1» group of Humming Birds, it is very curious to observe, as Gould¹ shewed me, that «how many are^t2» each is characterized by «cases of nesters^t3»some extraordinary ornament, & «also in some of the species are how^t4» such ornaments have been carried to a wonderful extreme; & some can understand then on principle of selection, whatever part first varied, w^d by sexual selection be exaggerated, Birds^t5 precisely like in our domestic varieties, each peculiarity (the crop in the pouter—pigeons) the hood in the Jacobin, the parts^t6 in the Tumbler, the tail feathers in the fan-tail have been exaggerated through main case.—
Perhaps p 50^t7
or when I discuss Humming Birds^t8

^t1 in other birds] in pale pencil ^t2 how many are] in pale pencil ^t3 cases of nesters] in pale pencil; conjectured transcription ^t4 also in some of the species are how] in pale pencil; conjectured transcription ^t5 Birds] in right margin; vertically downwards ^t6 parts] conjectured transcription ^t7 Perhaps p 50] in left margin; vertically upwards; encircled; in pale pencil ^t8 or when I discuss Humming Birds] in left margin; vertically upwards; in pale pencil

1. John Gould, 1804-1881. DCP.

Transcription and apparatus copyright the American Museum of Natural History