NINTH REPORT 1839. 



Table II. [continued), 



VI.- 



-Topaz. 2nd axis. [Ray in direction of axis.] 



B. 



c. 



D. 



E. 



F. 



G. 



H. 



1-60840 



1-60935 



1-61161 



1-61452 



1-61701 



1-62154 



1-62539 



VII.— Ditto. 3rd axis. [Ditto.] 



^1-61049 



1-61144 



1-61375 



1-61668 



1-61914 



1-62365 



1-62745 



VIII.-Arragonite. 1st axis. [Ditto.] 



1-52749 



1-52820 



1-53013 



1-53264 



1-53479 



1-53882 



1-54226 



IX.— Ditto. 2nd axis. [Ditto.] 



1-68061 



1-68203 



1-68589 



1-69084 



1-69515 



1-70318 



1-71011 



X.— Ditto. 3rd axis. [Ditto.] 



1-67631 



1-67779 



1-68157 



1-68634 



1-69053 



1-69836 



1-70509 



Table III. 

 Indices determined by the author of this Report. 



I.— Double-distilled Oil of Cassia at 10° Centig. [3rd series.] 



B. 



C. 



D. 



E. 



F. 



G. 



H. 



1-5963 



1-6007 



1-6104 



1-6249 



1-6389 



1-6698 



1-7039 



II.— Ditto at 14°. [3rd series.] 



1-5945 



1-5979 



1-6073 



1-6207 



1-6358 



1-6671 



1-7025 





III.— Ditto at 22°-5. [2nd series.] 





1-5895 



1-5930 



1-6026 



1-6174 1-6314 



1-6625 



1-6985 



