82 Keeble . — The Hanging Foliage of 
These numbers may be arranged in the form of a ratio, 
thus : 
(-):(+) 
Monday, 1.40 p.m. 15 : 31=48 : 100 
j > 4-30 „ 21 : 28 = 75 : 100 
„ 8.30 ,, (most hanging downward, i. e. most ( — )). 
Tuesday, 7.30 a.m. 7 : 43 = 16*3 : 100. 
When the roughness of the method is remembered, and 
also the difficulties attendant on even simple observations in 
the open, it will probably be conceded that the above statistics 
bear out what has already been described to be the move- 
ment possessed by leaflets of Anther stia nobilis. These 
observations were continued with a view to discovering if the 
amplitude of the movement in Anther stia nobilis was so 
markedly controlled by the amount of insolation as is the 
case in Browne a grandiceps. 
The following results were obtained : 
( + ) 
( = ) 
(-) 
Tuesday, 
7.30 a.m. 43 
23 
7 = 73 total number of leaflets observed. 
12.40 p.m. 39 
32 
6-77 » 
4 - 3 ° » 39 
27 
6=72 ,, 
Wednesday, 
7.30 a.m. 52 
16 
8 = 7 6 „ » 
2.30 p.m. 37 
24 
15 = 76 „ 
6.30 „ 21 
21 
28 = 70 „ 
The discrepancies in the totals of the last column are due 
to the fact that it was sometimes impossible, owing to wind, 
&c., to determine in a particular branch the positions of all 
the pairs of leaflets ; but for the purpose for which the num- 
bers are quoted these discrepancies are not sufficiently great 
to matter. The Tuesday was a cloudy, rainy day, with no 
one hour of continuous sunshine. On Wednesday, on the 
contrary, the sun shone fairly brightly. It was such a con- 
junction of circumstances as was wanted for the experiment. 
The results are noteworthy. On Tuesday, cloudy, no sun : 
at 4.30 p.m. only six pairs of leaflets were sufficiently de- 
pressed to make a difference in the length of thread between 
the pairs. On Wednesday, sun : at 2.30 p.m., i.e. two hours 
