STIMULATION ON TURGESCENT VEGETABLE TISSUES. 15 
Exp. 11 (continued). 
Times of observation. Rate of “growth.” ^ Temperature. 
A.M. ? C. 
113175 .................. 2:6 c. c. ether added, 21 
12 per cent. 
1118  .................. 81 » 
11.488 .................. 58 » 
11.205 .................. 1:2 c. c. ether added, » 
1:6 per cent. 
11.22  ................. 26 » 
Exp. 12.—Sept. 14, 1886.  Sunflower-pith ; lever. 
Times of observation. Rate of “growth” Temperature. 
A.M. e €. 
119  ................. In damp air (370 c. c.). 21 
11405 .................. 49 " 
11427 .................. 22 ý 
11.428 .................. 1-6 c. c. ether put in, » 
‘43 per cent. 
114355 .................. 44 " 
11.452 .................. 42 „ 
1146  ................. 39 » 
1L47  ................. 4 c. c. ether put in, » 
1:5 per cent. 
1148  ................ 83 " 
11.485 ................. 62 » 
11.49  .................. 1:6 c. c. ether added, » 
2:0 per cent. 
11.50 — ............. e 55 " 
11.505 .................. 43 5 
1215 ............... 11 » 
122  .................. 10 c. c. ether added, .  , 
4°6 per cent. 
126 . .......... b ai " 
1295  ................ Began to shorten. " 
jaag II Tre feontraction. 
1214  ................. Not flaccid. » 
Another method, too rough to admit of accurate determinations, 
confirmed our results in a general way. 
A young flower-stalk (we employed Chrysanthemum corona- 
rium) was divided longitudinally, so as to cause the two halves to 
curl outwards in the usual way. A semicircle of the split pe- 
duncle was fixed by one end to a pin stuck into the bottom of a 
shallow glass vessel. It was so arranged that as the peduncle 
continued to curl up, its movement was in a horizontal plane. An 
index of spun glass was fixed to the free end of the peduncle, and 
the movement of the index measured under a vertical microscope 
with a low power. l 
When the rate at which the index was moving across a micro- 
meter-scale had been determined, a drop or two of ether was 
