F. E. Kipher— Phenomena of Bh 



:iile the other ingredi- 

 Dot possess any 

 external form, 



but the labradorite is finely striated by twinning, and this pro- 

 daces a beautiful effect when it is examined with polarized 

 ligbt. The magnetite is extremely magnetic, and, on being 

 separated from the other material by a magnet, the grain? retain 

 magnetism and become little lodestones, and several quite 

 is can be drawn along together with the end of a 

 wire. These rocks form a part of the series that will 

 be described in the third part of the report of the New Hamp- 

 shire Geological survey. 



It has been supposed that the metallic 

 from the agency of carbon or some reducing ago..., «.uwu w 

 ins on the magnetic iron at a high temperature has reduced i 

 i it to the metallic state. The presence of this iron k 

 the centers of the irregular grains of 

 cate that the magnetite in this rock 1 



2 of basalts results 



ulted frc 



..xMnt 



■ of t 



It is possible that the phenomena here described may have 

 seen observed before, but I have been unable to find any 

 •ecord of them. . 



1. Fold a sheet of writing paper into a tube about an inch 



n diameter. Look through the tube at some distant object 



* Read before the St Louis Academy of Science, Nov. 6th, 1876. 



