81 
Strongly refracting, yellow needles. 
Monoelinie-prismatic. 
a: 
Forms observed: m= {110}, large and lus- 
trous; a={100}, narrower; c = {001}, well 
developed. Moreover, again a negative pyramid 
and a doma are observed, which, however, 
cannot be determined more precisely. It is for 
this reason, that the occurring face c was taken 
as {001}, although this form represents certainly 
not a basal face, but a horizontal prism. 
Angular values: Observed: alculated : 
mm (110) : (100) —* 47°15’ — 
Bee (100): (001) =* 26 21 — 
Pe (110):(001 == 52 40 52925’ 
6 == 2, 40411, 
f= 267 2k" 
No distinct cleavability was observed. Fig. 6. 0-Oxy-benzylidene- 
The specific weight of the crystals was: aniline. (@-Modification). 
1,184 at 17° C. 
; the molecular volume is, therefore, 166,38. 
§ 7. VI. «-Anilido-ethyl-anisol. 
This compound was prepared from the just mentioned by means 
Fig. 7. Anilido- 
ethyi-anisol. 
of methylmagnesium-iodide, ete. It has the formula: 
& 
J, CMCHs) -NH—CoHs 
OCH; 
and melts at 46° C. 
From ligroin badly developed, strongly refracting 
needles are deposited, which allow only approxi- 
mate measurements. 
Rhombic-bipyramidal. 
fi. De == 0884-0 A0 
Forms observed: t = {110}, m = {320}, p = {210}, 
and m= {520}, all about equally narrow, and 
yielding multiple reflexes; q — {011}, smaller, and 
badly reflecting. The aspect of the crystals is elon- 
gated in the direction of the c-axis. 
6 
Proceedings Royal Acad. Amsterdam. Vol. XXIII. 
