4 J- H. SMITH, Bleach-out Process of Colour Photography. 



REFERENCES. 



1. Jahresrerhandlungen der Kurlandischen Gesellschaft fur 



Literatur mid Kuust. Band I., 1819. Seite 1 19-189. 



2. Philosophical Transactions of the Royal Society of London. 



Vol. 132, p. 181. 



3. Annates de chemie et de physique. 3 Serie, Vol. 22, 1848, 



p. 458. 



4. Von Grothuss' Werke, neue herausgegeben, " Ostwalds 



Klassiker der exakten Wissenschaften," Vol. 152. R. 

 Luther and A. von Oettingen : " Ueber Elektrizitat 

 und Licht," p. 100. 



5. Liesegang's Photographisches Archiv, 1889, No. 633, p. 328. 



6. Moniteur de la Photographie, 1895, p. 318. 



7. Photogr. Pundschau> January, 1902, and subsequent num- 



bers. Eder's " Jahrbuch fiir Photogr.," 1902; p. 20. 



8. Anzeigen der Wiener Kais. Akademie der Wissenschaft., 



13 Marz, 1902. 



9. German patents 146,785. 148,293 and 149,627 in Class 



57B. 



10. In the Photographische Industrie, 1908, p. 1069, I have 



criticised Szczepanik's method fully. 



11. English patent 2461 of 1907. 



12. Colour Supplement, Brit. f. of Phot., January, 1909, p. 2. 



