(3

That variability is caused by changed & unnatural or new conditions is [rendered] probably by

all or nearly all domestic productions being varied & generally more than organisms in a state of nature.

Bird-variation vy rare under nature, not uncommon with long & highly cultivated plants.

But at present we can only say that the vital process are somehow affected by changed conditions & the development of all parts somewhat modified.

Perhaps the sterility from confinement ─ good evidence how susceptible organism to changed conditions.

Inheritance – simplest case propagation by buds by grafting ─ Every old character obviously inherited & the ease with which new characters are inherited is shown by vast number of races

The wonder is perhaps when any character fails to be inherited

Laws of ─ corresponding ages ─ shown by diseases ─ in Fowls, which differ in the down, young & mature plumage from

[in margin:] Proportion of Transmission very important.

(209

Ch XII

an interval of 18h. I placed atoms of glass, cork, cinders, thread & gold-leaf were placed on numerous glands on two leaves: in about 1h. four tentacle became curved & four others an additional sp. interval of 2h 30m, four other tentacles likewise became incurved. I I never once succeeded in causing any movement by repeatedly touching the glands with a needle; but there may possibly have been some movements a want of vigour in the plants. I placed  & Mrs. Treat made the same trial for me with no success. Small flies having been placed on several leaves near their tips [sketch] & the thread-like blade became very slightly bent on one occasion alone, indirectly directly beneath the insect: perhaps this indicates that in the leaves of vigorous plants wd bend over captured insects, & Mrs. Treat (?) informs me that this species catches many insects, but only small kinds, only minute insects, as I suspected was was the would be the case from the thinness of the thread-like leaves & small size of the glands. Mr. Canby states informs me that this is the case; but the movement of the blade cannot be as strongly pronounced as with any other some of the other species, of Drosera for it was not observed by Mrs. Treat.)

[Insectivorous plants, p. 281: "Particles of glass, cork, cinders, thread, and gold-leaf, were placed on numerous glands on two leaves; in about 1 hr. four tentacles became curved, and four others after an additional interval of 2 hrs. 30 m. I never once succeeded in causing any movement by repeatedly touching the glands with a needle; and Mrs. Treat made similar trials for me with no success. Small flies were placed on several leaves near their tips, but the thread-like blade became only on one occasion very slightly bent, directly beneath the insect. Perhaps this indicates that the blades of vigorous plants would bend over captured insects, and Dr. Canby informs me that this is the case; but the movement cannot be strongly pronounced, as it was not observed by Mrs. Treat."]