PRINTING. 155 



Graph'otype. — A process by which prints are made witliout 

 engraving. A tablet oi' prepared and compressed chalk is 

 used, and upon it the draughtsman makes his drawing with 

 a peculiar ink. The tablet is gone over with a brush ia 

 such a way as to leave the inked parts in relief. The 

 chalk is now hardened by an appropriate process, and from 

 it electrotypes may be taken. 



Homog'raphy (Gr. homos, like, and grapho, I write). — The 

 art of reproducing copies of a printed work, engraving, 

 or lithograph. 



Imposing". — The act of putting the pages of a sheet in proper 

 order on the imposing-stone, and preparing them to be 

 printed. 



Impres'sion. — Edition ; number printed at once ; one course 

 of printing of a literary work. 



Jus'tifying. — The act of properly adjusting the words, lines, 

 spaces, etc., of a page. 



Lead. — A plate of type-metal used to separate lines of type. 



Lithochro'mics (Gr. lithos, a stone, and chroma, color). — The 

 art of printing colored pictures from oil-paintings on stone. 



Lithophotog'raphy (Gr. lithos, a stone, and photography). — 

 The art of producing prints from lithographic stones, by 

 means of photographic pictures developed on their surface. 



Lith'otint. — A process by which the effect of a marked or 

 tinted drawing can be obtained on stone by the aid of 

 lithography. 



Logog'raphy (Gr. logos, a discourse, and grapho, I write). — 

 A method of printing in which types containing whole 

 words are used instead of single letters. 



Mat'ter. — Composed type. 



Papyrog'raphy (Gr. papurus, papp-ns, and grapho, I write). 

 — A lately invented art, which consists in taking impres- 

 sions from a kind of pasteboard covered with a calcareous 

 substance (called lithographic paper) in the same manner 

 as from stones in the process of lithography. 



Phytog'lyphy (Gr. phuton, a plant, and glnpheln, engraving). 

 — The art of printing from nature, by taking impressions 

 from plants, or other objects, on soft metal or other sub- 

 stances, and from these taking an electrotype plate, by 

 means of which impressions are multiplied. Nature- 

 Printing. 



Pi. — Type promiscuously intermingled. 



