136 Mr Lurasdaine on the Cultivation of S'pices^ S^c. 
vial importance. It is to their industry, spirit j and perseve- 
rance, that we owe the naturalisation of these valuable exotics, 
the established reputation of their produce, both in Europe and 
India, the abolition of the monopoly and exclusive pretensions of 
the Dutch to this trade ; and, finally, the assured possession to 
Great Britain of this promised scene of national and colonial 
wealth. I consider that I am within bounds, in estimating the 
total amount of European private capital sunk in this specula- 
tion at 436,000 dollars, and of native at 35,000 dollars, from 
the first commencement of the plantations until the trees respec- 
tively came into bearing, but of this a considerable portion has 
been redeemed in produce. 
Abstract Statement of the Public and Private Spiee Plantations 
at and in the Vicinity (f Fort Marlborough, for 1819—20. 
Above 20 
years of age. 
Between 10 
and 20 years 
of age. 
Between 5 and 
10 years of 
age. 
Total under 5 
years of age, 
including nur- 
sery plants, not 
hearing. 
Total No. 
in cultiva- 
tion. 
Total 
No. 
Bear- 
ing. 
Total 
No, 
Bear- 
ing. 
Total 
No. 
Bear- 
ing. 
Nutmegs. 
-1819—20 
1818-19 
130 
152 
113 
135 
19,045 
16,938 
12,382 
10,360 
39,024 
43,418 
13,554 
13,728 
43,712 
48,921 
101,911 
109,429 
1 Increase, 
LDecrease, 
22 
22 
2107 
2022 
4394 
174 
5209 
7518 
i] 
r 1819— 20 
1818—19 
2132 
2160 
3132 
1653 
9832 
9200 
632 
5243 
4837 
400 
12,728 
14,912 
24,692 
26,372 
1 Increase, 
LDecrease, 
28 
479 
2184 
1680 
Art. XXI. — On a Remarhable Peculiarity in the Law of the 
extramdinary R fraction f differently-coloured Rays exhi- 
bited by certain Varieties of Apophyllite. By J. F. W. 
Herschel, Esq. F. R. S. Lond. & Edin. &c. &c. &c. * 
Doubly refracting crystals have hitherto been divided into 
two classes ; the first, comprising those in which the deviation of 
• From the Transactions of the Philosophical Society of Cambridge^ vol. i. 
part ii. p. 241. 
