REPRODUCTION OF ILLUSTRATIONS 



various processes for reproducing illustrations, only the 

 broadest general principles involved have been touched 

 upon, giving only sufficient details to illustrate the ap- 

 plication of these principles. A complete account of the 

 various modifications in the applications of these prin- 

 ciples to practical engraving would require many closely 

 written volumes, for almost every engraver has his 

 own special method of doing things to get certain well- 

 defined results, but these, although somewhat inter- 

 esting in their details, are not essentials of the develop- 

 ment of engraving. 



[219] 



