142 SCIENTIFIC NEWS. 



SCIENTIFIC NEWS, 



New Earth. 



New earth. _^ j^EW earth has been difcovered by Profeflfor Klaproth 

 of Berlin, in an ore which was hitherto fuppofed to contain 

 tiingften, to which he has given the name of ochrdit earth, 

 the mineral which contains it he has called ochroit, (ochroVtes.) 

 This earth feems to form the conneding link between the 

 earths and the metallic oxides. Like yttria, it produces a 

 reddifh coloured fait with fulphuricacid ; and is precipitable 

 by all the pruffiates; bat it is diftinguiflied from yttria by not 

 forming fweet falts, and by not being (at l6aft much lefs) 

 foluble in carhonate of ammonia, and by acquiring when 

 ignited, a light brown colour. This earth farther differs from 

 yttria, by not being foluble either by borax nor by phofphates, 

 with which yttria fufes into a colourlefs pellucid bead. Its 

 other charaderiftics, and method of obtaining will be given 

 in our next Journal. 



Suberic Acid from Paper *. 



BRUGNATELLI has obferved, that when nitric acid 

 is made to ad upon paper, a large quantity of fuberic acid, 

 mixt with oxalic acid, is obtained. This proves that Fourcroy 

 was right, in placing cork among the immediate principles 

 of vegetables. 



Eafi^ and expeditious Method of preparing Copal Varntfh +. 



DEMMENIE, an ingenious glafs blower, has noticed that 

 the folution of copal may eafily be effeded, by expofing it to 

 the vapours of alcohol or oil of turpentine. For that purpofc 

 an alembic may be filled | with either of thefe fluids, and 

 fome pieces of copal fufFered to be fufpended by threads in it, 

 over the furface of the fluid. After having made the alcohol 

 or oil of turpentine to boil, the copal becomes liquefied, 

 drops into the fluid and becomes diflblved. When no farther 



* Gehlen's Journal of Chemifry ; Vol. I. p. 3. page 340, 

 t Ibidem. 



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