38

(38

Utricularia

(I tried a weaker solution, viz of urea of (1 gr of [illeg] to the ounce, to 1 oz), on six specimens all carefully examined before being irrigated, one The first was not examined until 8h 30 m had elapsed, when all the glands had including the spherical had become brown; many many of the oblongs having their utricularia protoplasmic layer much shrunk, with the included granules secured to apparently be few in number is but larger in size.

The second bladder had already been slightly affected by the water, from the contents of the spherical head was not quite uniform in appearance; & here & there a few of the oblongs oblongs were brown with the utricularia protoplasmic layer shrunk. At After 3h 12m from the time of irrigation many of the oblongs which were before colourless, had become brown brown with their utricularia protoplasmic layer slightly shrunk; the sphericals had had not become brown, but their contents presented a different & more symmetrical appearance to which they did at first. After 23h the spherical heads had again presented a different appearance to which they did not last & observed; but were not brown & they they changed in appearance thus many spherical contained say granules but had not become brown; most of the oblongs were dark brown, but with the utricularia layer not most of then had not their protoplasmic layer greatly

[38v]

[mathematical notes by G. H. Darwin, not transcribed.]

Draft of Insectivorous Plants with my corrections on back

GH Darwin

June 1909