404 CHARACTERISTIC. CLASS I. 



1. HEMI.PRISMATIC. Henri-prismatic. =79 41'. In- 



clination == 3 0'. 

 Cleavage, = 58 52'. Less distinct, Pr + CD and 



(&r +03) 3 =76 28'. 

 H. = 1*0 ... 1-5. 

 G. = 1-4 ... 1-5. 



Prismatic Natron. J. ii. 27- 



2. PRISMATIC. Prismatic. r = 83 50', (r + os) s = 



107 50'. 



Cleavage, Pr + <, very indistinct. 

 H. = 1-5. 

 G. = 1-5 ... 1-6. 



Prismatic Natron. J. ii. 29. 



II. GLAUBER-SALT. Prismatic. 



Taste cool, then saline and bitter, weak. 

 H. = 1-5 ... 2-0. 

 G. = 1-4 ... 1-5. 



1. PRISMATIC. Hemi-prismatic. = 93 12'. Incli- 

 nation = 14 4K 

 Cleavage, f r 4- co, perfect. Traces of = 72 15'. 



and of Pr -f 03. 



Prismatic Glauber-Salt. J. ii. 31. 



III. NITRE-SALT. Prismatic. 

 Taste saline, cool. 

 H. = 2-0. 

 G. = 1-9 ... 2-0. 



1. PRISMATIC. Prismatic. P =* 132 22', 91 15', 107 43'. 



