20 
Mr Liaars on a neW' Style qfEngravmg 
for CGpp€r-{)late engra\aiig, and, at the same time, at such a 
cheap rate, that the original cast of the stone, and the expence 
of preparing^ it, either by a transference of the drawing to be 
multiplied, or by a direct delineation of it upon the stone, bears 
almost no proportion to the expence of cutting it on copper* 
It is impossible to speak too highly of the great advantages 
of stone-printing, in those cases to which it is really applicable ; 
but there is some risk of forming too high an estimate of its 
powers, and we fear that the public expectations are too san- 
guine to be ultimately gratified. 
In all these cases, where the expence of copper-plate engrav- 
ing is very great, compared with the expence of paper, and of 
taking off the impression, whether this difference arises from the 
smallness of the number of impressions, or from the difficulty 
of the engraving, the art of lithography is peculiarly valuable. 
But when the subject to be engraved is a mere outline, such as 
diagrams, the expence of cutting which on copper is very trif- 
ling, or when the expence of paper and of taking the impression 
is very great, from the number of impressions to be thrown off, 
then the original cost of the engraving, even if it has much 
work upon it,, forms such a small part of the whole expence, 
that it would not be advisable to multiply it by stone printing. 
When we consider that the expence of paper is the same in 
both arts ; and that the method of taking impressions from 
stone, is more troublesome and less certain than in taking them 
from copper, we shall have no difficulty in distinguishing the 
particular cases in which we should have recourse to lithography. 
The art of engraving upon wood, though imperfect from the 
very nature of the process, possesses great advantages. If we 
wish to illustrate a subject by a single diagram, we are enabled 
to do it by a wood engraving, which is printed from it along with 
the types, and which therefore saves all the expence of throwing 
off the impressions separately, and also the expence of a sepa- 
rate leaf of paper. In many instances this saving amounts to a 
great sum, and the original expence of the v/ood engraving is 
comparatively nothing. We have, besides, the great advantage 
of having the diagram or figure adjacent to the description of 
it, an advantage which those only can appreciate who spend 
much of their time in the study of mathematical and physical works. 
