152 
DR. JOHN STENHOUSE ON VEGETABLE PRODUCTS FROM INDIA. 
angle between normals to rt^ is 98° 38'. In the white crystals the cleavages are 
parallel to the faces c, m, m'. The angle between normals to m, c is 98° 40', and the 
angle between normals to m and the face parallel to rrJ is 98° 42'. I should almost 
be inclined to suppose the brown crystals to have actually the same form as the white 
ones, the difference of the angles rr', r'r", rr" escaping observation, and as a conse- 
quence, that they have the same chemical constitution, a slight amount of impurity 
excepted.” 
The following are the results of the analyses of the stearopten obtained from dif- 
ferent sources. 
A. Stearopten from India*. 
I. 0'2385 grm. gave 0*6955 grm. CO^ and 0*2025 grin. HO. 
II. 0*3405 grm. gave 0*9910 grm. COg and 0*2815 grm. HO. 
III. 0*1870 grm. gave 0*5440 grm. CO 2 and 0*1550 grm. HO. 
B. Stearopten obtained by the spontaneous evaporation of the oil. 
0*3355 grm. gave 0*9780 grm. CO 2 and 0*2735 grm. HO. 
C. Distilled stearopten recrystallized from the oil. 
I. 0*2720 grm. gave 0*8015 grm. CO 2 and 0*2225 grm. HO. 
II. 0*3115 grm. gave 0*9175 grm. CO 2 and 0*2630 grm. HO. 
The most simple formula agreeing with the numbers obtained by the above analy- 
ses is C,o H 7 O, as shown by the following Table: — 
Required. 
Found. 
Cio = 60 80-00 
H; = 7 9*33 
0 = 8 10-67 
A. 
B. 
c. 
I. 
79*53 
9*43 
II. 
79*38 
9*19 
III. 
79*34 
9*19 
79*50 
9*06 
1 . 
80*36 
9*09 
II. 
80-33 
9*38 
D. Analysis of the distilled stearopten not recrystallized out of the oil. 
I. 0*4125 grm. gave 1*1885 CO 2 and 0*3375 grm. HO. * 
II. 0*3030 grm. gave 0*8655 CO 2 and 0*2475 grm. HO. 
E. Analysis of the same crystals recrystallized out of ether and pressed between folds 
of blotting-paper. 
I. 0*5915 grm. gave 1*7100 grm. CO 2 and 0*4860 grm. HO. 
II. 0*2385 grm. gave 0*6900 grm. CO 2 and 0*1975 grm. HO. 
* In the December Number of the ‘Pharmaceutical Journal’ for 1854 I published an analysis of the stea- 
ropten made from a small portion of the substance given me by the late Dr. Stocks. 'Phis I have subse- 
quently found to be inaccurate, and the analyses given above are substituted in its stead. 
