( 667 ) 
For comparison I have investigated the o-Mitrobenzyl-derivative 
of orthotoluidine *). 
Recrystallised from acetone in which the compound (m. p. 96°) is 
very soluble, the substance forms very large, transparent, pale yellow 
or rather pale greenish-yellow crystals possessing a strong lustre and 
assuming a more brownish tinge on prolonged exposure to the air. 
Elongated, prismatic needles are also occasionally obtained. 
The first-named crystals are nearly isometrically developed and 
possess many combination forms; they admitted very well of accurate 
measurements. 
Rhombic-bipyramidal. 
The parameters are: 
a@:6:¢ =0,8552 ; 1 : 056138. 
o-Nitro Benzyl-o-Toluidine. 
Forms observed: g = {021}, 
strongly predominating and lus- 
trous; 0—={211}, broadly developed 
and yielding sharp _ reflexes; 
7={101}, well formed and lustrous; 
c = {001}, narrower but well 
reflecting; 6 — {010}, dull some- 
times present with only a single 
plane; mostly a little broader than 
c, but also somewhat smaller ; 
=) 
s = {201}, narrow and unsuitable 
for measurement; the symbol has been deduced from the zone-relation. 
The habitus is mostly thick-prismatie along the a-axis; particularly 
the smaller crystals possess a very regular form. 
Measured : Calculated : 
b: 
: 0 
== OO1) 
(OOH) 
q= (010 
i (aol 
n= 
== (dt 
== (Al: 
:0= (021 
p= (O2 
: 0 = (010) 
: (021) =*50° 50' = 
: (101) =*35 40 En 
VOA EE 8) 39° 10 
: (101) = 27 20 27 10 
: (217) = 65 8 65 18 
: (001) = 57 26 bad 
(211) = 38 46 38 40 
: (211) = 53 167/, 53 18 
:(101) = 59 1! 59 8 
: (2441) = 70 38 70 40 
Completely cleavable parallel {021}, distinctly towards {211}. 
1) Ber. d. d. Chem. Ges. 25. 3582. 
46 
Proceedings Royal Acad. Amsterdam. Vol. VII. 
