P. 251, I. 31: For fuchsin- orange G-anilin blue, 

 read fuchsin-orangeG- anilin blue. 

 P. 259, under Zalesky 1866 : For Bd. .1 1 . read Bd. 1 ; for Saeyler, read Seyler. 



P. 264, under description of Fig. 16: Far ■ 1650, read 825. 



1\ 266, under description of Figs. 21. etc.: For x 1850, read X925. 



