[27]

Dr Ransom in Paper Read to Philosoph. Soc. read June 21 1866

shows action of Poisons &c on yolk of living egg like my experiments.—

[27v]

Phil Trans 1867. p. 481

p 467

471 Temp

474 I do not think worth alluding to

476 —Carbonic acid

481 Poison to ova

482 Stychn (Summary)

Poisons seem to have hardly any effect, except Chloroform & Carbonic acid

This is an argument for some undifferentiated nerve element

492 Oxygen

Ransom

[Insectivorous plants, pp. 225-6: "But a pharmacopoeia would be requisite to describe the diversified effects of various substances on Drosera.†

† Seeing that acetic, hydrocyanic, and chromic acids, acetate of strychnine, and vapour of ether, are poisonous to Drosera, it is remarkable that Dr. Ransom (' Philosoph. Transact.' 1867, p. 480), who used much stronger solutions of these substances than I did, states "that the rhythmic contractility of the yolk (of the ova of the pike) is not materially influenced by any of the poisons used, which did not act chemically, with the exception of chloroform and carbonic acid." I find it stated by several writers that curare has no influence on sarcode or protoplasm, and we have seen that, though curare excites some degree of inflection, it causes very little aggregation of the protoplasm.)"]