ON THE CONSTRUCTION OF ICE-HOUSES. 
301 
On the Construction of Ice-Houses. —A correspondent, whom 
we feel willing to oblige, has requested our opinion as to the best and 
most convenient form and manner of constructing an ice-house. By 
way of answer, we might have referred our correspondent to what we 
have written on the subject in our number for December last; but, 
lest he should not have that number at hand, we shall at present make 
a few additional remarks, and add here (what was omitted then) two 
sections of ice-houses, to which we then alluded. 
The first is the common form in which ice-houses are built; the 
second is a section of another, (see page 478,) which, though we 
have never seen executed, we have, however, no doubt would answer 
the purpose as well, and certainly be as easily filled, and much more 
convenient for getting out ice when required. 
We may repeat, that there are two sources of heat to be guarded 
against in constructing an ice-house, viz. solar heat, and that which is 
ever rising from the interior of the earth. The former is the most 
destructive to ice, because its medium is air; whereas the latter is 
usually conveyed through the medium of water either in a condensed 
