Ailanthiculture. 239 
La huitieme année, | kilog. de plus (ou 5 kilog. par 
ABBE} MOMMANE  ivys: 5 is, sted ib wio’o alist oj Baie alershae ps SPLOT OUTS 
—— 
COTS AOC SOE REISER ren eae riie ere eevee Gie E POTS 
La neuviéme année, 1 kilog. de plus (ou 6 kilog. par 
BERT); GOMNANC, -o.0:.°¢ « sra)ers.o.010, o:c:c.n a eraieielershe oie ore EeaTS 
EGAN! ache PING 6 Sad wiiaata OLD LER ARBRE PINs Pe ee as 
La dixiéme année, 1 kilog. de plus, donnant toujours 3.372 
ou 7 kilog. par arbre ou touffe, et j’al ......00--.2+- 23.604fr, 
It must be observed that no account is taken of rent or of the 
cost of superintendence, and that the cost of planting the trees in 
this country would greatly exceed the estimate in Note A. Never- 
theless it must also be observed that the trees are planted in single 
rows, 80 inches from row to row, and 40 inches from tree to 
tree; whereas by planting the rows from 30 to 36 inches apart, 
and each tree in the row 24 inches apart from the next, with an 
alley 6 feet wide between every 5 rows, rather more than 34 times 
as many trees may be planted on the same area. It is also more 
than probable that in our moister climate a greater Juxuriance 
will be obtained by the tree, and it has been observed that the 
cocoons* and imagos are larger here than in France. Lastly, as 
a method has been arrived at of reeling the thread, the value of 
the cocoons will probably be doubled, 3 francs per kilogramme 
being the price offered for them for the purpose of carding. 
Hitherto I have examined from a practical point of view the 
production of the raw material, the cocoon; and I am warranted, 
I think, in expressing an opinion from the experiences brought 
forward, and the knowledge attained of the habits of the insect, 
that it can easily be produced in quantities in England. But a 
very important question still remains untouched, viz., the price 
which these cocoons will bring to the producer, 7. e., What re- 
muneration may be expected for a given weight of cocoons ? 
* As regards the weight of cocoons containing the chrysalis, an average of 
four trials which I made on 28th December, 1865, gave 185 cocoons “to the 
pound, or 407 to the kilogramme. ‘The cocoons were divested of their leafy 
envelope, but otherwise remained as they were gathered, with the cable ora 
portion of the cable attached; they were taken at random, and were not 
selected for their size. M. Méneville calculates 450 “ cocons pleins’’ to the 
kilogramme (ante, p. 237), or according to the more accurate measurement, 
400 or 413 to the kilogramme (n. }, p. 238), but this is taking the weight 
10 days after the formation of the cocoon, when there would be more moisture 
present than during winter. 
