10 
As for the Bombyn japonica, it is one of the valuable acqui¬ 
sitions which are the result of our recent intercourse with 
Japan. It feeds on the leaves of the tree which yields the 
so far famed and so much admired Japan varnish: the 
Japanese silk begins to find favor in the London market. 
Before closing this chapter, I beg to call the attention of the 
reader to a most important fact : it is the constant and progres¬ 
sive increase of silk produced all over the globe; and yet, the 
demand for this valuable article, and consequently its price is 
increasing in a still liigher proportion : the average prices I gave 
when I first began to write this Essay, are gradually out¬ 
stripped by the current prices which reach us by every new mail: 
the price of French and Italian raw silk in the London and 
Lyons markets, averaged for the last three months thirty-five 
shillings per pound. 
With these observations I proceed to give the tables alluded 
to in page 8 observing that for the present they are limited to 
the mulberry tree worm education, as I have not yet sufficient, 
data concerning the castor oil plant worm, or the Japanese 
worm: one thing I know: people are very busy and sanguine 
about them in the countries where they have been newly 
introduced. 
No. 1.—Approximate outlay of a Sericicole Establishment, 
on 10 acres (4 hectares) in France. 
Mulberry Department. 
10 acres at £30 
Ploughing, harrowing and planting 
2500 plants: 500 for full growth on 5 acres, 
and 2D 00 mulberry shrubs on the other 5 
acres 
Education Department. 
Education Hall, a plain brick or stone building 
100 feet x 25 feet with sheds or verandahs all 
round 
Education implements ... 
Keeling Department. 
Keeling Hall, a plain brick or stone building 
50 feet x 25 
Steam engine 10 horse power, boilers, fittings, 
&c. 
£300 0 0 
20 0 0 
100 0 0 
150 0 0 
100 0 0 
50 0 0 
300 0 0 
Carried forward £1,020 0 0 
