ANALYSIS OP KANEELSTEIN. — LUNAR RAINBOW. 231 



t 



XII. 



Analysis of the Kaneelstein; by Professor Lampadius*. 



iL HE kaneelstein has always been considered as a species Analysis of ka- 

 of jacinth. Its colour is orange, approaching' that of cin- neelstein » 

 pamon, whence Werner gave it this name. Its analysis by 

 Prof. Lampadius leaves no doubt, that it is a variety of the 

 jacinth. He obtained from it 



Silex 42 : S 



Zircon- 28*8 



Alumme 8-6 



Potash 6-0 



Lime 3*8 



Oxide of iron 3*0 



Loss by calcination • • • • 2-(i 

 Loss » • • 4*4 



100-0 



This analysis shows, that it does not contain much more 

 than one fourth of zircon, while the jacinth contains 0*69. 



XIII. 



Observation of a Lunar Rainbow; by L. Cordier, Mine 

 Engineer f* 



Was lately witness of a pretty rare phenomenon, a rain- Lunar rainbow, 

 bow in the night. The 13th of this month, August 1807, 

 I was standing with several persons on an eminence, that 

 commanded a view of the horizon. We had near us, to the 

 north, the tail of a storm, that poured down a copious rain. . 

 At the same time the sky cleared up toward the south, and 

 the moon, nearly at full, appeared. A fine luminous bow 

 then appeared on the storm ; but, though it was well de- 

 fined, the seven primary colours were scarcely to be distin- 

 guished in it. They seemed as if drowned in a tint of pale 

 yellow. What struck us particularly was, that the whole of 

 the circle encompassed by the bow was luminous, and tinged 

 with a similar yellow hue, though less intense. 



* Journal de Physique, vol. LXV, p. 32. f Ibid, p. 208. 



XIV. 



