ISt^:.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



TOT 



Frame 117. — Ralf-fone process. — Xos. 751 and 753 from life, the rest 

 fioui paiutiugs; William Kurtz, Xew York. 



Frame IIS. — Half-tone process. — All from still-life, uature. and life: 

 the Photo-Engraving Company. 



FRA3IE 119. — Half tone process {Ives process). — Xos. 775 and 777 from 

 washed drawings, the rest from nature and life. The "Ives process"' 

 differs from other half-tone processes in this, that the grain, instead of 

 being the result of a grating used in photographing, is produced by an 

 ingenious mechanical contrivance, which can not be described here: 

 Crosscup & West, Philadelphia. 



Frame 120. — Half tone process. — Xos. 783. 785. and 7S7. from washed 

 ■Irawings and paintings, the rest from nature and lite: •' Mosstypes," 

 oy the Moss Engraving Company. 



2. PHOTOLITHOGR.APHY AND ZINCOGRAPHY. 



In these processes the printable picture is produced either directly by 

 exposure of the scone or zinc plate in the camera, or under a glass neg- 

 ative or positive, as the case may be : or, more commonly, by a photo- 

 graphic picture on paper, inked with transfer ink, and used like a litho- 

 graphic transfer. 



Frame 121. — Early worl: about 1852-1860. — Xo. 794, by Lemercier. 

 Lerebour & Barreswil, from nature (about 1852-53). Xo. 795. by Poite- 

 vin. Paris, from a washed drawing (about 185()-*57). No. 796, by P. Gib- 

 bons, England, from life (May, 1860). Xos. 797-800, by L. H. Bradford, 

 of Boston: Xo. 797 from a drawing: Xo. 798 from a print: Xos. 799 

 and 800 from nature (about 186:>). 



Frame 122.— TToj-A- <1one about 1861-1863.— Xo. 801. by Asser. Brus- 

 sels, from a painting (1862), Xo. 802, by Simoneau & Toovey (Asser's 

 process), from nature (about 1862). Xo. 803. by W. Toovey (Asser's 

 process), from a painting (about 1862-''63). Xo. 804, by James Ramage, 

 Edinburgh, from an engraving (April. 1861). Xos. 805 and 806, by 

 Asser, from old wood-cuts (February, 1862). Xo. 807, on zinc, by Col- 

 Sir James Henry, from nature (Xovember. 1862). 



Frame 123. — Process of J. W. O.s'borne. — This process is distinctively 

 a line process, in which the work in the stone is produced by transfer- 

 ring, and was invented in ^Eelbourne, where it was largely used for map 

 work, in 1859. Xos. 808-814. reproductions of pen-and-ink drawings. 

 (Xos. 808 and 809 done in Melbourne in 1860.) 



