[These slides are, doubtless, a very ingenious invention, and though they are liable to some objections, which we shall afterwards notice, yet, in the case of landscapes suited for a quarto or folio page, they are calculated to save a great deal of trouble in drawing; since one landscape, by means of one or two slides, may serve instead of two or three. Slides of this kind are particularly useful in the case of ground plans, where the object is to shew different modes of arranging some particular part of the plan; and they may also be advantageously applied in the case of slight sketches of landscape on a large scale. In order, therefore, that our readers may clearly understand what a slide is, we shall give an example.
