Curvature of Tendrils. 
385 
III. 
Dec. 24, 9.15 a.m. A tendril of Cucurbit a, 20 cm. long, was placed 
in a solution. 
„ 10 a.m. The tip curved 320° with radius of -3 to 1*3 cm. 
Entire tendril curved 20°. 
,, 12 a.m. No change. 
„ 2.30 p.m. Curves decreased to 240°. Entire organ 
straightened. 
Dec. 25, 10 a.m. ij circle. 
„ 4 p.m. Same. 
Dec. 26, 9 a.m. Same. 
Dec. 27, 11 a.m. 2§ circles. Placed in distilled water. 
„ 2 p.m. Curve 3J circles. 
Dec. 28, 2 p.m. Curve contracted. 
IV. 
Dec. 24, 9.15 a.m. Tendril of Cucurbita , 20 cm. long, placed in 
solution. 
,, 10 a.m. Tip of main tendril in 3 circles of radius of 
.4 to 1 cm. i\ circle in branch. 
„ 12 a.m. No change. 
„ 2.30 p.m. No change in main tendril. Curve of 300° in 
branch. 
Dec. 25, 10 a.m. ij circle in main tendril. Curve of 300° in 
branch. 
,, 4 p.m. Curve of if circle in main tendril. Curve of 300° 
in branch. 
Dec. 26, 9 a.m. Same in main tendril. 1 circle in branch. 
Dec. 27, 11 a.m. Curve of 35o°in main tendril. 2 circles in branch. 
Placed in distilled water. 
Dec. 28, 2 p.m. 3 circles in main tendril. 2\ circles in branch. 
Dec. 29, 2 p.m. No change. 
t 
From the long continuance and variations in changes in the 
stature of the tendril, both in the plasmolysing fluid and in 
distilled water, it is evidently unsafe to draw conclusions as to 
the initial osmotic conditions, since the resulting movements 
