138 CONTRIBUTIONS TO MINERALOGY. [bull.2( 
#—{7076}: Occurring on three crystals, the following angles wei 
measured : 
o / o / 
Meas 43 24 Calc 43 49 
53 
44 06 
14 
^={7075}: The reflections from the very narrow faces of this fori 
were poor. 
o / o / 
Meas 49 17 Calc 49 01 
16 
48 42 
.4 = {7074}: This is the most prominent of the new forms, and occurr; 
ten times as (relatively) broad faces on four crystals. The reflection 
were usually fairly good. 
o / O / 
Meas.... 54 52 Calc... 55 12 
49 
52 
48 
55 35 
11 
38 
12 
24 
17 
i?={9095}: A very doubtful form, present as very narrow facet 
giving poor reflections. 
o / o / 
Meas 56 18 Calc 55 57 
05 
{19.0.19.10}: Another vicinal form, doubtless vicinal to {2021}. 
o / o / 
Meas 56 59 Calc 57 23 
57 18 
18 Calc. for {2021}, 58° 42 / 
30 
19 
6"= {15. 0.15.7}: Another vicinal form occurring on three crystals. 
o / o / 
Meas 60 13 Calc 60 25 
38 
24 
-Z)={9094}: A doubtful form present on one crystal. 
o / o / 
Meas.... 61 53 Calc 61 37 
30 
