Ill 
the months of March or April ; when it will occasionally be 
expedient to have the ventilating apertures open all the night. 
Portable Sashes. Under this head may be included all 
ordinary garden sashes, which may be thrown at liberty from 
houses, pits, or frames ; and as their size not unfrequently varies 
much, it is not easy to plan any fixed mode of culture which 
may receive benefit from them. Moreover, such are seldom at 
liberty until July or August, when they can be of little use, 
unless placed before vines or peaches on the open wall, in order 
to accelerate the ripening of both wood and fruit. We there- 
fore advert to them here, merely as forming, when available, 
one item in the category of Protectors. 
We may now be permitted to draw attention to a very econo- 
mical mode of cultivating the peach and nectarine under glass ; 
and for which the title of “Ker’s protective system” has been 
suggested. It is the invention of H. B. Ker, Esq., of Ches- 
hunt ; and, as he has established one or more in his own 
garden, and the Horticultural Society have also done the same 
in their grounds, we shall, in a short time, find out whether 
they are successful. In dealing with this division of the subject 
it will be desirable that we place a sketch and description of it 
before our readers. It consists merely of a screen of glass, 
placed over a trellis, on which the peaches or nectarines are 
trained ; sides are dispensed with, also front and ends ; with 
these it would, of course, be a regular pit or frame; herein 
then consists part of the economy. 
The above sketch will, at once, convey an idea of its for- 
mation ; and, as regards proportions, every cultivator will 
doubtless, make these subservient to his own taste and the space 
he has to spare. Mr. Ker’s sashes, or lights, are six feet eight 
296. AUCTARIUM. 
