THE CHEMICAL CONSTITUTION OF NARCOTINE. 
667 
( c ) Heraipinic acid, C 10 H 10 O 6 ,HO, 
System monoclinic : — 
a:b:c= 2*5210 : 1 : 29597, 
ac= 92° 40 f . 
Observed forms : — 
(10 0 ), (0 01 ), (1 01 ), ( 112 ). 
Calculated. 
Observed. 
10 0, 
001 
= 
O 
87 
20 
87 30 
101 , 
100 
= 
39 
18 
101 , 
001 
= 
48 
2 
48 2 
112, 
100 
= 
71 
10 
112 , 
1 12 
= 
79 
20 
79 20 
112 , 
001 
— 
56 
20 
56 20 
112 , 
101 
= 
52 
42 
52 42 
Cleavage perfect, parallel (0 01). 
(d) Hemipinic acid, C 10 H 10 0 6 , H 2 O. 
System monoclinic 
a:b: c=0-5407 : 1 : 1-2620, 
ac=9T 42'. 
Observed forms : — 
(0 01), (110), (Oil), (2 2 5), (2 2 7). 
Calculated. 
Observed. 
110, 
010 
= 
o 
61 
49 
*6l 49 
110, 
110 
= 
56 
22 
Oil, 
010 
= 
38 
40 
*38 40 
Oil, 
001 
= 
51 
20 
110, 
001 
= 
83 
13 
110, 
Oil 
= 
63 
44 
63 28 
225, 
010 
= 
68 
33 
2 2 5, 
001 
= 
50 
14 
2 2 5, 
Ho 
= 
46 
28 
46 24 
2 2 7, 
010 
72 
23 
2 2 7, 
001 
= 
39 
30 
2 2 7, 
110 
58 
12 
58 40 
T10, 
001 
— 
96 
47 
*96 47 
4 T 
MDCCCLXVIL 
