60 



Fig.^7. 



Laevagyiatory Trictliylenediar 



inine-Coballinilrate. 



A distinct cleavage was not observed. 



On jlOOj and iOlOj, also on JlOlj and IllO,' everywliere a normal 

 extinction was found. Tlie cry.stals are not appreciably dicliroitic. 



25° 

 Tlie specific gravity of the crystals at 25° C was: d o =^1.729,- 



4 



the molecular volume is thus: 245.91. Topical parameters: 

 X : if^ : (o = 6.7486 : 7.8046 : 4.6695. 



