(5

Selection ─ a varying bud implant case & propagating it ─ hardly more complex case if well marked var occurs in 2 sexes, or in only 1, pairing them preserving only those with the desired peculiarity.

The as t Astonishing skill & perseverance is required in picking out slightly perceptible differences,─ Knowing how long the same strain may be closely interbred ─ & how far it will be safe to cross with a slightly or greatly different strain.

Has produced wonders ─ Race-Horses value of Short-Horns. ─ Gooseberry

All the above methodical selection.

See Var under Dom & Origin for Unconscious Selection very important

Explain that slow & hidden origin or [formation] of breeds & by competition their extinction;

probably interbreeding have come into play.

[in left margin:] Selection Is interfered with by reversion, but this can be almost always conquered. Interfered with by conditions.─ sheep in France get merino explained

[in right margin:] When selection cannot be applied, Cats no breeds Donkeys ─ Honey-bee.─

[page] (273

moistened with saliva or given atom of meat, they did they became incurved after an interval of about 20xm, though with extreme slowness; showing & this shows that they were already much injured. Stronger solution (but the strength was not ascertained) will often sometimes arrested the power of all power of movement, very quickly: thus I placed atoms of meat on the glands of several Marginal tentacles, & as soon as they began to move gave them a minute drop of the solution. They continued for a short time to go on bending & then suddenly stood still; the other tentacle with having meat on this glands & not bent having been moistened with the strychnine goes continuing to bend, passing those, & soon reaching the centre of the leaf.

Citrate of strychnine: half-minim drops of a solution of 1 gr. to 1 oz were placed on the disc of six leaves: after 24h the marginal tentacle showed was only a trace of inflection: atoms of meat was then placed on three of the leaves, & other an additional 24h there was only some slight & irregular infection, showing that the leaves had been greatly injured: the other two of the other three leaves, which had been left untouched had the glands on the disc dry & [excised] minute drops of a solution of 4 gr to

[Insectivorous plants, p. 200; "The latter, however, on being subsequently moistened with saliva or given bits of meat, became incurved, though with extreme slowness; and this shows that they had been injured. Stronger solutions (but the strength was not ascertained) sometimes arrested all power of movement very quickly; thus bits of meat were placed on the glands of several exterior tentacles, and as soon as they began to move, minute drops of the strong solution were added. They continued for a short time to go on bending, and then suddenly stood still; other tentacles on the same leaves, with meat on their glands, but not wetted with the strychnine, continued to bend and soon reached the centre of the leaf.

Citrate of Strychnine.—Half-minims of a solution of one part to 437 of water were placed on the discs of six leaves; after 24 hrs. the outer tentacles showed only a trace of inflection. Bits of meat were then placed on three of these leaves, but in 24 hrs. only slight and irregular inflection occurred, proving that the leaves had been greatly injured. Two of the leaves to which meat had not been given had their discal glands dry and much injured. Minute drops of a strong solution of one part to 109 of water (4 grs. to 1 oz.) were added to the secretion round several glands, but did not produce nearly so plain an effect as the drops of a much weaker solution of the acetate."]