( 134) 



sharp reflexes; p = \120\, very narrow and dull; often absent 

 altooether. 



Measured : Calculated : 



m:m = (100) TlO) = *63° 1^ 



m:c =(110): (001) = * 73 2 — 



q:c— (Oil) : (001) = *33 28 — 



q:b = (Oil) : (010) = 5632 56° 32' 



m : b = (llOj : (010) = 58 26è 58 29 



m :p = (110) : (120) = 19 12 19 17 



jy.b = (120) : (010) = 39 23è 39 12 



r : c = (TOl) : (001) = 58 10 58 5 



r : m = (1ÖÏ) : (110) = 58 12 58 18 

 m : q = (110) : {OlT) = 57 58i- (circa) 58 41 

 q:r = (OlT) : (TOJ) = 63 41^ (circa) 63 22 



c:h = fOOl) : (010) = 89 58 90 



Very perfectly cleavable towards jOOlj ; like "glimmer" the crys- 

 tals may be reduced to very delicate lamellae. 



On |001j orientated extinction ; on jllOj the inclination of the one 

 elasticity-axis towards the vertical axis amounts to 19°; on jOlOj : 

 27° with regard to the side b : c, in the acute angle j?. The axial 

 plane is, probably, situated perpendicularly to |010|. By means of 

 «-monobromonaphthalene etched figures were obtained on m, c and 

 b, which are in accordance with the indicated symmetry. 



The sp. gr. of the crystals is 1,461 at 19'^ C; the equivalent 

 volume =184,12. 



Topical axes: /: V' : a> = 4,9130 : 7,5296 : 5,2970. 



7. 1-2-4-6-Trinitrometliylplienylcarbamic Ethyl-ester. 

 CeH, (NO J . (NO,) . (NO,) . NCCH,) . CO . (C,H,); m.p. 65*^ C. 



(6; (4; (2) (1) 



