1687.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 729 



by the Boston Photogravure Compauy. No. 803, "Albertype," by the 

 Forbes Litliograph Manufacturing Compauy. 



Frame 130. — Architectural suhjects from nature. — Xos. 865-868, "he- 

 liotypes," by the fleliotype Printing Compauy. Xo. 8G9, " phototype," 

 by F. Grutekunst {see also No. 894 on Screen 12, in corridor). No. 870, 

 "heliotype," by the Photogravure Company, New York. 



Frame 131. — From plastic objects and from nature. — Nos. 871-874, 

 •' phototypes," by the Boston Photogravure Company. Nos. 875 and 

 876, '■'■ heliotypes," by the Heliotype Printing Company. Nos. 877 and 

 878, "heliotypes," by the Photogravure Company. Nos. 879-882, 

 "Albertypes," by the Forbes Lithograph Manufacturing Company. 



Frame \o1.— Portraits and groups from life.— 'Nos. 883 and 884, 

 " phototypes," by F. Gutekunst. No. 885, " Indotint," by the Photo- 

 gravure Company. Nos. 886-888, " heliotypes," by the Photogravure 

 Company. Nos. 889 and 890, " Albertypes," by the Forbes Lithograph 

 Manufacturing Compauy. No. 891, "heliotype," by the Eeliotype 

 Printing Company. No. 892, " artotype," by Harroun & Bierstadt. 



4. INTAGLIO PEOCESSES. 



As before stated, the priuts grouped together under this heading 

 (with one exception, see Frame 144) are printed on the roller or copper- 

 plate press, from plates which receive the ink in depressions. The 

 plates themselves involve either etching or electrotyping or molding of 

 some sort. As a rule, a considerable amount of hand-work is used in 

 finishing the plates. The various names applied to these processes will 

 be found in the following lists: 



Frame 133.— Early worJc (1853 to about 1865).— Nos. 895, 896 (1853) 

 897, Fox Talbot's " photoglyphographic process." No. 898, "gravure 

 heliographique," Niepce de St. Victor's process (1856). No. 900, Mante. 

 No. 901, " photo-electric engraving," Dallas's process (about 1864). No. 

 902, Heliographic Engraving Company (Egloffstein), New York (about 

 1865).~N. B. No. 899, Fox Talbot's portrait, heliogravure Dujardin 

 (1881), is placed here, in connection with Fox Talbot's own work, simply 

 for the interest of the portrait. Nos. 895 to 902 are all from nature, with 

 the possible exception of No. 900. 



Frame 13L— Early worlc, by Paul Pretsch {about lSo4.-18r,7).— No. 903, 

 from a pen-and-ink drawing. Nos. 904 and 905, from bas-reliefs. 



