358 Barber . — Cupressinoxylon vec tense. 
with recent woods may be regarded as resiniferous 1 . The 
resiniferous parenchyma may be described as abundant, and 
our wood is therefore to be placed under Cupressinoxylon. 
I n a transverse section of recent Coniferous wood the 
parenchyma may frequently be determined by its contents 
or the thinness of its walls, and its relative abundance thus 
TABLE 11. 
No. of medul- 
lary ray cells 
per sq. mm. 
Size of individual cells f in /a (about 
fifty measurements in each case). 
Average area 
of cells in ju. 2 . 
Amount of 
medullary ray 
tissue per sq. 
mm. 
Proportion of 
medullary raj' 
j tissue in wood. 
Height 
(radial sections). 
Height 
(tangential 
sections). 
Width. 
Br. (1) | 
. Section (1) 
183 
( 17 , 18) 
16 
14 
176 
.032 mm 2 
I : 30 
; Section (2) 
165 
19 
14 
209 
•034 
1 : 28 
Br. (2) < 
[ Section (1) 
281 
(16.8, 15.6) 
15 
12.7 
151 
•042 
1 : 23 
| Section (2)* 
211 
I 5*7 
14 
173 
•037 
1 : 26 
Rt.(i)< 
[ Section (1) 
108 
( 18 . 5 , 21) 
19-6 
16 
246 
•027 
1 = 36 
[ Section (2) 
III 
20.5 
16 
2 57 
•029 
1 : 33 
Rt. (2) ! 
1 Section (1) 
270 
(18.8) 
T 9 
14.2 
212 
6 
C_n 
++ 
1 : 17 
( Section (2) 
271 
1 9 
14.2 
212 
•057 
1 : 17 
* See note to Table I. 
t The radial length varied from 23 to 159 /x and covered from 2 to 6 tracheides. 
J See note to Table I. 
noted. This is not possible in our specimens, where the walls 
of adjoining cells are not separable, and it is difficult to 
distinguish the resin-cells from tracheides with dark contents. 
In longitudinal sections, however, the contents of the 
parenchyma are seen to be peculiar, and differ from the 
small rounded granules found in the tracheides. Spherical 
Strasburger, 1 . c. 
