This alkaline preparation, however, is applicable only for the intaglio style. For the relief style, the acids are better.
Recently I have applied chemical printing from metal plates to a new form of copying-machines, with which everything written or drawn with chemical ink or crayon on paper can be transferred in a few moments and manifolded several hundred times. His Royal Majesty of Bavaria has had the supreme condescension to grant me a six years' patent on this invention.
Until now I have not been able to give this matter the necessary attention because the work of publishing this book hindered me; but now I shall make such a stock of these simple, convenient, and so widely useful hand-presses that it will be worth while to open a subscription, which would enable me to sell them for a low price. This would please me best, as my highest reward would be the general use of my inventions, to fulfill which desire I have taken the utmost pains in this work.
In the last parts of the book I have gone less into details, merely because I assume that those who have mastered the first parts of this work will not need many words to understand the rest.
If the demand for this perhaps prematurely announced book had not become so vehement lately that I could not possibly delay its publication any longer, I should have tried to produce sample illustrations that combine inner art value with good printing. As it is, I postpone this for a supplementary volume soon to appear, in which I shall occupy myself mainly with processes and methods not yet generally known, representing each by means of a true work of art. With which I now end my text-book, with the hearty wish that it will find many friends and create many good lithographers. This may God grant!
The Riverside Press
PRINTED BY H. O. HOUGHTON & CO.
CAMBRIDGE, MASS.
U.S.A.
Transcriber's Notes:
Punctuation and spelling standardized.