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Acacia Farnesiana

Dec. 12th plant now healthy & kept warm, but leaves old.— By pinching them gently all the leaflet rise up & partially close, but do not nearly shut & move slowly— can be of no use.— Syringing forcibly with metal syring makes them close quite as much, perhaps rather more, & quite as quickly, — so sensitive to stream of water. — (I think with Drosera & Dionæa &c, must have been from the first specialised for solid contact.

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A. farnesiana

Compound leaf with very small leaflet, not wetted by cold water but silvery.— well wetted after short immersion in S. Ether.

Immersed & shaken for 1m in water 84°-83° well wetted

Do. in water 76° 75° for 1m spotted with water, but great greater part dry.— This leaf was a pinna experimented on was was taken from end of full-grown compound leaf.—

A leaf immersed in water at 80° & heated to 128°,  no movement was caused; was left in water for abut 1h till water cooled to 63° & the leaflets all closed quite as close as during sleep; but this is not quite close.