718 CATALOGUE OF GRAPHIC ART EXHIBIT.. 



Frame 35. — i^o. 181, from block obtained from a drawing made upon 

 a " Scbraubstadter star engraving plate." [The "kaolatype," from 

 kaolin (porcelain clay), involves practically the same process.] 



2'^. MINERALOGRAPHY. 



Minerals cut to a plane surface and polished are treated with acids, 

 and electrotypes are taken from them, which can be printed like other 

 intaglio plates. 



Frame 36.— Nos. 182-184 from Auer (1853). 



23. MINER ALOTYPY. 



Mineralotypy is the previous process reversed, so that the result is 

 a relief block for the type press. 

 Frame 36.— No. 185 from Auer (1853). 



24. NATURE-PRINTING. 



In this process the eagerness of man to compel nature to do his work 

 — as yet, however, without the intervention of the sun — would seem to 

 have reached its possible limit, for the objects themselves are here used 

 to produce their own images, even more directly than in the previous 

 two processes. Leaves, plants, etc., are pressed into soft metal, more 

 fragile objects into a gutta-percha composition, and the impressions thus 

 obtained are reproduced by electrotyping, the result producing plates 

 which can be printed like other intaglio plates. 



Frame 36. — Nos. 186-188, printed from intaglio plates. From Auer 

 (1853). No. 189 : In this case the plate was inked on the surface and 

 printed on the type press, so that the design shows in white on a col- 

 ored ground. From Auer (1853). 



Part II. — Wood Engraving in the United States. 



[Alcoves 4, 5, 6. Cases 10-18 and screens 5 and 6.] 



The exhibition of American wood-engravings illustrates the history 

 of the art in the United States from the beginning of this century down 

 to our own time. Although wood-engraving was practiced here before 

 the time of Dr. Alexander Anderson (1775-1870), he is, nevertheless, 

 called the father of wood engraving in America, as he was the first en- 

 graver of any note, and very prolific. In his style of \jork he was a close 

 follower (and in his designs often a copyist) of Bewick, and, naturally 



