1876.] Botany. 685 
“It will be seen from the above table that by far the greatest total 
energy of growth was displayed by the lowest of the four segments, 
which increased during the twelve days between February 26th and 
March 10th from 0.4 to 3.45 in., or 762.5 per cent. of its original length. 
The next greatest energy, but at a great interval, was exhibited by the 
apical section, which increased from 0.35 to 1.15, or 228 per cent., while 
the two central portions exhibited the least activity, increasing only from 
0.4 to 1.0, or 150 per cent. of their original length. 
` Specimen B, grown in a pot. In the second example, the evidence 
was still more conclusive that the growth of the peduncle is mainly bas- 
ilar. On February 26th, the flower-stalk, then an inch in length, was 
divided into two equal portions of 0.5 in. On the next day, when it had 
increased to 1.1 in., the lowest zone of 0.1 in. was marked off separately. 
By ten P. m. on February 29th this lowest zone (C+D) had increased to 
0.7 in., or by 600 per cent. of its original length, while the two upper- 
most zones were still respectively only 0.55 and 0.5 in. long. The lowest 
zone was then again divided into two portions, the upper one being 0.5 
and the lower 0.2 in. long. By ten P. m. on March 3d the lengths of 
the four zones, commencing from the top, were 0.8, 0.8, 0.75, and 0.75 
in., giving a total of 3.1 in. At ten P. M. on the 7th, the total length 
of 6.5 in. was distributed thus: 1.6, 1.5, 1.25, and 2.15 in.; and at 
ten A. m. on the 13th, when the final length of 8.2 inches had been at- 
tained, the measurements were respectively 2.2, 1.75, 1.5, and 2.75 in. 
The following is the complete table : — j 
A. B. C. D. Total. Increase. 
Wee MO, 8 AL 5 5 1.0 bs 
ae ae Oe Seen 5 5 ; 1.0 0 
M IPn 5 „55 a 1.06 05 
70 PS cca 5 5 3 1.1 05 
ih, 0 A eS 5 5 2 aeons 
Cats ics 5 5 2 1.2 0 
E 5 5 2 1.2 0 
me Vie a BB 5 45 i 1.5 : 
oe a A AN .55 5 5 2 1.75 pr 
MNS aes $05 a. ta cls. cick Sh ae ae sumoa 
oE Mas oc bane 6 .55 „55 3 2.0 L 
U DA 6 6 55 T i ’ 
OP. T 65 6 BB 5 23 x 
R Mei hee 65 65 65 6 2.55 . 
$2. th i A 75 75 65 65 p s 
E A A n cat 8 a % 1 $. ; 
We DLE 9 9 8 A E : 
oO 8 MS CG eee 9 9 85 1.25 oe = 
Oe TO kei ch ences 1.0 1.0 1.0 1.25 - , 
sE E T 1.05 11 11 1.25 oA : 
6th, 10 A. m 12 1.25 44 1.55 : 
UE AS 1.35 1.3 1.2 1.75 56 
OA e aii 1.5 1.5 1.25 1.85 6.1 3 
20 9. E 5 ieee 1.6 1.5 sa a gt e 
8th 1.5 iS it 
, 5 = Misia E = 1.65 pe ‘is Ei áT @ 
