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Dec. 4th 1878. Dionæa Kept in Hot case, observed under Compound M. in near Hot House with triangle of paper fixed to one spikes almost vertically. — micrometer 1/500 of inch. — Point was oscillating about 1/1000 of an inch— F played deep note ( ) Stood when music began 29-30 from N. end of Scale of Micrometer of Bassoon for 2', & in 10' had closed when 2/500 & then went back or opened a little after about 1/2 hour had closed 2 1/2/500. At 2m 10'

(Petiole not secured so all observation vitiated & leaf hardly sensitive)

11° stood between 25 1/2 & 26 1/2.

11° 30' 20-19 (always opening) 5m 30'

11. 45 18-19

11. 53} High note (opening) for 2' & now 11°. 55'. stood 14-15

11. 54} 14-15 (scale slowed round so a trifle inaccurate)

12. 20' 9-10 5m 26'

1° 23 4-5

2° 52 do (not moved.) 5 m 57'

4° 0-1

4° 20' 3 or 4 degrees beyond end of Scale & to right) 3 m 20'0

4h do.

Dec. 5th 7° 30' on the scale. 4-5 Closed

9'-10° off scale again

moved during days as much as 23- 24 on scale (— or oscillated or 1/500 about 1 degree)

Dec 6 — on scale — 9-10

F. played High notes & low notes each for 2', but as leaf Hardly sensitive— goes for nothing.

(not worth trying without I can prove other leaves sensitive)

(Whether on first day the great shutting movement was due to lowered temperature from being taken out of case or the effect of music I know not)

(If I try again, secure petiole & get younger Plant)

with parallel of notes on Oxalis sensitiva effects of Bassoon no effect.