SUBJECT INDEX 



105 



(t) Weissmann. 



1888: 



1895; 



;: 17 Stein 

 >: 20 Weissmann 

 ;: 19 Ulzer and Brtill 

 (u) Williams. 



18 Williams 



9 Mackintosh 



2 1 Troilius 



12 Mackintosh 



3 Cheever 



4 Brown 

 2 Bastin 



13 Parry and Morgan 

 2 Auchy 



5 Dudley 



6 Ford and Bregowsky 

 16 J. T. 



6 Ibbotson and Brear- 

 ley 



V. By miscellaneous methods. 



(a) by means of alkali sulphides. 



1894: 10 Neumann 



(b) by reduction of potassium ferri- 



cyanide. 

 i860: 3 Lenssen 



1892 

 1893 

 1895 

 1896 



1900 



1864: 2 Fresenius 

 (c) by means of potassium ferro- 

 cyanide. 



(f) by the titration of manganate. 



10 lies 



1 2 Kalmann and Smolka 



14 Reichard 



(g) by the titration of manganic 



phosphate. 

 1883: 4 Hanipe. 

 189 1 : 1 8 Moore 

 (h) by means of iodine (indirect). 



iSqo: 16 Vortniann 

 (i) by solution of ignited oxide in 

 reducing agents. 

 1876: 3 Galbraith 

 1886: 2 Barlow 



(C) BY COLORIMETRIC METH- 

 ODS. 



I. By oxidation to permanganic acid 

 by means of 



(a) bismuth tetroxide. 



1895: 7 Forestier 

 1896: II Mignot 



(b) lead peroxide. 



1872: 8 Pichard 

 1876: 5 Peters 

 1 881: 5 Deshayes 

 1883: I Goetz 

 1882: II Ledebur 

 1886: 8 Cheever 

 1886: 13 Hunt 



