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abundant supply of cocoons, in the quickest manner, and at the least 
expense, a more artificial mode of rearing must be resorted to. Hence, 
M. Roland has contrived, for hatching eggs more expeditiously, what 
he calls a “ magunanerie,” which is a shed with a span-roof of shingle 
and sides of wire gauze, having blinds for shelter against the wind or 
direct rays of the sun. This shed is placed in the most airy situation, 
and precautions are taken to insure thorough ventilation and freedom 
from damp and the access of injurious insects. Cleanliness and free 
ventilation are the essential features of the system throughout. But, 
as will be seen, the rearing of healthy eggs and the rearing of silk are 
two very different processes; and it is to the former only and to the 
rational and simple method of accomplishing it, as recommended by 
M. Roland, that it is the present object to call attention. 
AN ECONOMICAL. LIME-KILY, 
The value of lime for agricultural purposes has brought it into use 
wherever it can be obtained at a reasonable cost. The art of making if 
is so simple and easy as to allow every farmer who can cheaply procure 
limestone, (or shells,) to make it a part of his regular operations to burn 
his own lime. It is desirable, therefore, that he should have the means 
of doing so at the least possible expense. All that has been written 
for our reports, heretofore, on the subject of burning lime, has too many 
scientific details interwoven with the practical portions to be readily 
comprehended by the unlearned. What a farmer wants to know is 
how to build a kiln, how to fill and fire it, and how to use it, and 
how all this may be done at the least possible expense. I have under- 
taken to elucidate these points by drawings and directions which can be 
easily understood. 
There are two classes who engage in burning lime. One pursues it 
as a business—to make profit by Selling to others. The other burns 
lime for his own use. Of the first it may be said that the time occupied 
in the process of burning is an essential element in the success of his 
business ; hence the construction of his kilns with expensive chimneys, 
to secure uninterrupted draught, even by means of blowers, when neces- 
sary—the only means of keeping his laborers constantly employed. 
But to the farmer, who burns iime for his own purposes, it is a matter 
of little importance whether his kiln burns out in twenty-four hours, 
(as it may be made to do, by artificial means,) or whether it occupies a 
week to produce the saine result, because coustant attention is not re- 
quired as a matter of profit. Besides, it is a work which can be done 
at seasons when it will not interfere with the ordinary operations of the 
farm. The kiln once filled with stone and coal, and fired, may be left 
to do its own work, requiring only occasional regulation of the dranght. 
The kiln should be built in a side bank, so high that a wagon-load of 
stone driven near the top can be placed upon a platform, and there be 
broken into convenient sizes for burning, and from thence be thrown by 
hand or shovel into the kiln. This platform should be about four feet 
wide, and extend the whole length of the rear side of the kiln; and it 
should be as high as the wagon, and on a level with the top of the kiln, 
or nearly so. he kiln may be built of any kind of stone which will 
make a strong wall, and should be well bound throughout, on all sides, 
with planks and logs, as represented in the drawing. Without this, 
