Intelligence and Miscellaneous Articles. 403 



of Bucholzite is intermediate in the size of its fibres between that of 

 Chester, Conn, (the Sillimanite,) and that found at Chester, near 

 Philadelphia, and denominated Fibrolite. 



Having discovered the mineral above described, while occupied 

 along with my colleague, Dr. Percival, in the geological examina- 

 tion of the state, I have thought proper to name it in honour of his 

 Excellency Henry W. Edwards, the governor of the state; since the 

 survey was first recommended by his Excellency, and is still in pro- 

 gress under his administration. 



Edwardsite submitted to analysis yielded the annexed sub- 

 stances : 



Protoxide of cerium 56-53 



Phosphoric acid 26*66 



Zirconia 7.77 



Alumina 4.4,4, 



Silica 3-33 



Protoxide of iron, glucina, and 1 , 2 _ ]0 



magnesia traces and loss . . . . / 

 Dr. Shepherd remarks that the phosphoric acid and oxide of ce- 

 rium are in such proportions as to constitute a basic sesquiphosphale 

 *of the protoxide of cerium. — Ibid. p. 162. 



SILICEOUS AND CALCAREOUS PRODUCTS OBTAINED BY MEANS 



OF slow actions; report by mm. oay-lussac and bec- 



QUEREL, ON A NOTE OF M. CAGNIARD-LATOUR. 



IVI. Cagniard-Latour states that by the means of several processes 

 which he has devised, and which are dependent upon slow action, 

 he has succeeded in forming various substances analogous to those 

 which are found in nature. The following are some of the results 

 which he has obtained. 



" First Experiment. — Some lamp-black was treated with hot con- 

 centrated nitric acid ; the liquor after having been poured off was 

 exposed under a bell-glass for several months to the action of solar 

 light ; in proportion as the acid diminished, water or acid was added ; 

 by degrees siliceous concretions formed, some of which inclined to 

 the pyramidal form. Analysis indicated two per cent, of carbon ; 

 these concretions submitted in a platina crucible to the action of 

 caustic potash, heated by the flame of an alcohol-lamp, diminished in 

 size; their hardness is sufficient to scratch rock crystal. 



" Second Experiment. — Some of the bog iron (Jer limoneux) of 

 Berry was taken ; after having reduced it to a very fine powder, it 

 was treated with hydrochloric acid ; the solution was diluted with 

 water and was filtered ; it was next put into a large retort, and a 

 glass capsule containing a piece of white marble was then suspended 

 in it. The marble was gradually attacked, carbonic acid gas was 

 disengaged ; oxide of iron was deposited, and crystals several milli- 

 metres in length having the form and principal properties of felspar 

 with a calcareous base. 



" Third Experiment. — Milk of lime {lait de chaux) was poured 

 into a solution of perchloride of iron, to which had been added a 

 brown infusion of roasted corn. The precipitate having been well 



3F2 



