INTERNODES OF CALAMITES. 493 
Calamites Schiitzei (measured by Horwood). Curve I. 
1 2 | 34 | | 5 Total length. 
- —— — КЕ 
Ist cycle... | .. | 47 | 78 | 63, B | 16-19 | Incomplete. 
md „ ... 35-38 82 | 52 | 55 В 19 | 216-213 mm. | 
за)... Al 52 58 | п B 19 241 mm. | 
th, ш 40 957 Ов 19 (198 mm. | 
(5th usse | 38 52 52 .. .. .. Incomplete. | 
The cycles (periods) in the preceding Table do not correspond with those 
as defined by Horwood ; the reason for the changed grouping will be seen 
hereafter. 
In Curves I., IL., and ПТ., the crosses on the base-line denote the points of 
insertion of the branch-sears. 
Calamitina varians, var. insignis (measured by Kidston). Curve II. 
1 2 IKIE 6789 10 11 12 13 Total. 
9:5 Incomplete. | 
B 
8 В 75,1255 mm. 
В 
7 | 765 mm. 
| | | 
4 
4h 4.3 8 |85 4 3 5 45 55 65 5 85|.. .. .. Incomplete. 
Calamites undulatus (measured by W. Jongmans and illustrated by his 
Figure 4). Curve III. 
5 6 7 8 Total. 
Ist cycle ees se bs ss loss 1s. DB 018 Incomplete. 
| | | | | р 
nd p 0... 28 40 41 42 48 40 .. В 17 259mm. 
34 „ .... 30 42 47 57 58 00 64 В 18 376mm. 
4th 4, .... 87 .. |... ed. edeqede Incomplete. 
| | | | 
| | | | | | 
BOTANY, VOL. XL. 
LINN. JOURN. 2M 
