Wall Case or Frame
A general term applied to a glass protection sometimes put over such fruit-trees as Apricots, Peaches, and Nectarines, in unfavourable localities, where the fruits cannot be depended upon to ripen outside. A Wall Case or Frame (see Fig.209) is, practically, an unheated, narrow house; but if glass protection without heat is unsafe against the injury caused by spring frosts, it would be preferable to incur the further expense of having a house which, for erecting, would, in many cases, not cost very much more, when the wall was already at command, and insert sufficient hot-water pipes to keep out frost. The interior would then be available, so far as space permitted, for accommodating many other plants in winter which merely require a slight protection.