Colour and Chemical Constitution. 
275 
a-oximino, NOHa, = 1-09x1-10 = 1-20 
P- „ NOHjS, = 1-22x1-035 = 1-26 
j8-benzyl, PhCH 2 =1-15x1-03 =1-185 
jS-Ph.CHOH =1-19x1-03 =1-23 
j8-anilino, PhNH = 1-22x1-03 = 1-255 
j8-Ph . NOH = 1-26x1-03 = 1-30 
The above example, one of the bands of alkaline _p-oxyazobenzene, 
now becomes : 287 (phenate) X 1-20 (a-oximino) X 1-255 (^-anilino)=432J. 
The other band, from the formula Ph NOH NH C 6 H 4 0' is got from : 
287x1-09 (a-imino) X 1-30 (/3-phenyloximino)=407. The former agrees 
exactly with observation, but the latter is a little too high. The reason 
why the spacing and overlapping of the pair of bands varies has not been 
discovered. 
We will now proceed to calculate all the oxy-compounds, beginning with 
the simplest. 
1. The a-CH 2 group put into phenate gives jo-cresolate : calculated 
A 264 (or 287x0-92). Not observed in water, A about 285 in alcohol (Baly 
and Ewbank). 
2. The a-CH 2 group taken out of quinomethane gives ionised quinol : 
calculated A 315J (or 290^-0-92) for HO C 6 H 4 0' : alternatively phenate 
X oxidation-factor 1-1 : not observed. 
The following table exhibits the rest of the results : — 
Name. 
Basis of Calculation. 
Calcu- 
lated X. 
Observed A. 
jp-oxybenzaldehyde . 
p-oxybenzophenone 
^9-oxybenzylalcohol . 
p-oxybenzhydrol 
Fuchsone 
23-oxydiphenylmethane 
p-oxytriphenylmethane 
p-aminophenol 
Quinone-imine 
Qiiinone-anile 
p - o xy diphenylamine 
Quinone-oxime 
p-oxyazobenzene A . 
p-oxybenzalaniline A 
B 
p-oxystilbene A 
„ B 
p-benzalaminophenol A 
B . 
B 
Quinol x CHOHa 
Foregoing x Pha 
Phenate x CHOHa 
Foregoing x Pha 
Foregoing again x Pha 
Cresolate X Pha . 
Foregoing x Pha 
Phenate x NHa . 
xNOHa 
Foregoing x Pha 
Aminophenol X Pha . 
Quinol x NOHa. 
Phenate X NOHa X PhNH/? 
xNHaxPhNOH/5 
X CHOHa xPhNH/5 
xCH 2 axPhNOH^ 
X NOHa X PhCH 2 /? 
xNHaxPhCHOH/5 
319 
362 
290 
329 
374 
300 
340 
313 
344 
390 
355 
379 
432 
407 
304 
343 
407 
384 
330 (ale). 
Agrees visually. 
See Part XIII. 
397 (NaOH aqueous). 
433. 
395. 
About 375. 
About 345. 
400. 
About 375. 
About 355 (ether). 
Agrees visually. 
380 (ale). 
