24 
WRIGHT : THE GENUS DIOSPYROS 
Dimensions of Vessels. 
[Tw. — twig ; Sw. = sapwood.] 
Diameter. Radial Dia- Tangential Length. 
mm. 
meter, mm. 
, Diameter. 
mm. 
mm. 
D. Ebenum 
i Tw. 6 
0*045 
0034 
... 
0-31 
••• 
J Sw. 360 
« • • 
0085 
• « • 
0-081 
... 
0-45 
D. quæsita 
... 
Tw. 15 
Sw. 190 
... 
0-04 
0-13 
... 
0-04 
0-07 
... 
0-22 
0-43 
_ 
; Tw. 23 
... 
0-027 
... 
0-025 
0-23 
D. oocarpa 
... 
Sw. 255 
* » • 
0-07 
... 
0-06 
0-42 
D. affinis 
; Tw. 9 
... 
0-03 
##• 
003 
... 
0-22 
••• 
Sw. 200 
• •• 
0-12 
9## 
0-08 
... 
0*45 
D. montana 
... 
; Tw. 8 
1 Sw. 175 
... 
0-04 
0-07 
... 
0-07 
0-05 
... 
0-34 
0-36 
D. Embryopteris 
... 
Tw. 9 
Sw. 360 
... 
0-04 
0-14 
... 
0-04 
0-09 
... 
0-31 
0-43 
D. Moonii 
Tw. 15 
• . . 
0-06 
• •• 
0-05 
0-27 
... 
Sw. 165 
... 
0-18 
• •• 
0-10 
... 
0-35 
D. attenuata 
— ; 
: Tw. 6 
Sw. 140 
... 
0-025 
0-09 
... 
0-028 
0-06 
0-21 
0-32 
Tw. 9 
... 
0-038 
0-04 
... 
0-26 
D. pruriens 
... - 
Sw. 80 
Oil 
o-io 
... 
0-44 
D, acuta 
Tw. 7 
• • • 
0-034 
... 
0-028 
... 
0-31 
... j 
1 Sw. 60 
o-io 
• •• 
0-09 
... 
0*50 
D. hirsuta 
... j 
i Tw. 10 
1 Sw. 75 
... 
0-03 
0-18 
... 
0-026 
0-09 
0-41 
0-45 
D. Thwaitesii 
-1 
, Tw. 11 
• Sw. 203 
... 
0-027 
0-14 
... 
0-02 
0-09 
... 
0-30 
0-42 
D. crumenata 
...j 
i Tw. 20 
i Sw. 210 
... 
0-05 
0-16 
... 
0-04 
o-io 
... 
0*27 
0*54 
D. sylvatica 
i Tw. 9 
» Sw. 405 
... 
0-03 
0*13 
0-028 
0-09 
... 
0-20 
0-36 
D. Gardneri 
... j 
i Tw. 14 
i Sw. 170 
... 
0-05 
0-09 
... 
0-045 
0-06 
... 
0-30 
0-46 
D. oppositifolia 
... j 
;tw. h 
i Sw. 170 
... 
0-03 
0-14 
... 
0-026 
0-09 
... 
0-32 
0-4-0-6 
D. Melanoxylon 
...] 
; Tw. 10 
> Sw. 270 
0-023 
0-13 
... 
0-03 
0-09 
... 
0-36 
0-46 
D. ovalifolia 
-1 
Tw. 22 
| Sw. 240 
... 
0-024 
0-05 
... 
0-024 
0-05 
... 
0-20 
0-40 
D. Toposia 
-I 
! Tw. 14 
• Sw. 250 
... 
0-027 
0-09 
... 
0-03 
0-05 
... 
0-27 
0-30 
D. insignis 
i 
;tw. 12 
0-03 
0-034 
0-21 
...j 
' Sw. 185 
Oil 
... 
0-073 
... 
0*42 
The dimensions of the vessels in. the heart wood vary to a 
slight extent ; in the first three or four years’ wood the radial 
diameter varies from 0024 to 0*05 mm., the tangential dia¬ 
meter from 0*024 to 0*06 mm., and the length from 0*20 
to 0*35 mm. 
In the sapwood of the whole of our species the variation in 
radial diameter is from 0*05 to 0*18 mm., and the variation in 
