TABLES 
OF THE 
CRYSTALLINE FORMS INTRODUCED INTO THE DESCRIPTIVE PART OF THIS WORK, 
WITH THE MEASUREMENTS OF THEIR SEVERAL ANGLES. 
[The figures in the tables correspond to those in the body of the work.] 
SULPHUR. Figs. 14 and 15. Page 181. 
Fig. 14. The primary, an octahedron with 
a rhombic base. 
P on P .. 106°38 / and 84° 58' 
P onP' .. 144 17 ( Beudant ); 
143 7 48 (. Hauy ). 
P on r __ 108 26 6 {Hauy). 
GRAPHITE. Fig. 16. Page 186. 
Six-sided tables cleaveable into rhombs in 
the direction of the dotted lines. 
GLAUBER’S SALT. Figs. 17 and 18. Page 196. 
Fig. 17. The primary, an oblique rhombic 
prism. 
M on W ... 99° 36'; 
or, according to Haiiy, an octahedron 
with a rhombic base, Fig. 18. 
NATRON. Figs. 19 and 20. Page 197. 
Fig. 20. The primary, according to FLaiiy. 
P on P. 143° 8' 
P on P'..... 113 54 
NATRON. 
Fig. 19. A secondary form from solution, 
P on o.. 140°46 / 
COMMON SALT. Figs. 21 and 23. Page 198. 
Fig. 21. The primary, a cube. 
Fig. 22. A hollow quadrangular pyramid 
formed by the slow evaporation of a 
solution of common salt. 
SULPHATE OF POTASH. Figs. 23 to 25 in¬ 
clusive. Page 201. 
Fig. 23. The primary, a right rhombic 
prism. 
M on M' .. 118° 8' {Beudant.) 
Figs. 24 and 25, other forms of sulphate 
of potash. 
ALUM. Figs. 26 to 28 inclusive. Page 202. 
Fig. 26. The primary a regular octahe¬ 
dron. 
Figs. 27 and 28, modifications of the 
primary. 
