Errata. 



Page '250, for 1862 read 1812. 



Page 254, lino 1, far Tabot read Talbot. 



line 21, omit I/acock Church. 



— line 22, for Vienna read Vienne. 



line 23, to Calotypes add Photogenic Drawings and Photoglyph 



Engravings. 

 Page 255, line 4, for positive read positively. 



