74

Mém. de la Soc. des Sciences des Bordeaux Tom IV. 1866 p. 11. M. Paul Bert "Mouvements de la Sensitive" Mimosa pudica

p. 25 The most excitable part is the inferior part of the swelling up the bases of the primary petioles, & the upper part of the swellings at the base of the leaflet. (exposed to rain C.D.)

p 25 the parenchyma of leaf is inexcitable — one may prick leaflet, between the nerves & cause no effect. — It is the reverse, if the nerves are pricked. —

p. 26 The bark of a petiole can be removed with care & no movement. — Thus the tissue cellular of the swellings (like Dionæa?) & the fibro-vascular tissues are the sides which are excitable—

p. 26 Transmission effected solely by woody bundles, as proved by Dutrochet—

The transmission proceed in 2 ways up & down stems & petioles.

p. 31 The swellings at the bases of petioles & leaflets are both excitable & the motors.—

74v

M. Bert in a subsequent paper in same vol. p. 54 concludes that Ether & Chloroform attack with animals only the nervous centre — neither the sensory nor motors nerves nor the muscles not being are affected.—

see p. 54

74b

(2

p. 35. There is no contractile tissue in the inferior swelling— the latter [illeg] lose by excitement (both direct & transmitted) in some unknown unknown way its energy, or that pressure which it always at other times exerts against the central woody axis. — The upper swelling when excited certainly does not increase in power.

p. 37 The noctural movements are altogether of a very different nature & differently effected.

p 38 The movements of sleep not affected by ethers, whilst this does af prevent movements from excitement.

p. 39 & 42. Believes sleeping movements due to endosmose & exosmose, but does not believe that the excited movements can thus be caused:— cannot explain them.—

p. 43 says it is an error when any any of the movements of the Sensitive Plant are called "reflex"; for then movements depend on the strength of the excitement, & the

[continues in CUL-DAR209.15.75]

Paul Bert. 1866. Recherches sur les mouvements de la Sensitive (Mimosa pudica. Linn.). Mémoires de la Société des Sciences physiques et naturelles de Bordeaux 4 no. 2: 11-46.