• SCIENTIFIC NEW?.] * " |*j<l 



This result verifies that of the late Lowitz. Wc have 

 therefore two distinct species of the turquoise ; and may give 

 to this now mentioned Pliny's name of calais. 



Dr. John likewise conceives, that he has found a new vo- New metal* 

 hitile and acidihable metal in the grey ore of manganese 

 from Saxony. He obtained it by distilling the ore with sul- 

 phuric acid. The volatile metallic acid combines with a 

 weak solution of potash put into the receiver, and tinges it 

 Crimson. From this red liquor gallic acid, or infusion of 

 galls, throws down a chesnut brown precipitate. Prussiates 

 immediately change the red colour to a tine lemon yellow, 

 but without any precipitation. The carbonates do not pre- 

 cipitate the red solution; but if it be heated with a little 

 alcohol, the red colour changes to a green, a smell of eiher 

 is given out, and then the carbonates throw down a brown 

 oxide, which is soluble in muriatic acid. 



Mr. Bucholz has found, that the schorUform beryl of Bat-.BnYarba 

 varia is a true beryl containing 0'12 of glucine. beryi. 



Mr. Braconnot has analysed some fossile horns of an 

 extraordinary size found in an excavation at St. Martin, 

 near Commercy. He supposes these to have been the 

 horns of the great wild ox, the ttrus of the ancients, aurochs 

 of the Germans. From a hundred parts he obtained 



Ferriferous quartz sand 4 . 



Solid gelatine 4Q some feoff . 



Bituminous matter 4-4 bcrats. 



Oxide of iron • • 0*5 



Al umine 0'7 



Phosphate of magnesia 1 



Water 1 1 



Carbonate of lime 4*3 



Phosphate of lime, composed of 



Phosphoric acid 28*3 7 



Lime 41 J 65 ' 3 



100* 



To CORRESPONDENTS. 



Mr.Ibbetson's and Mr. Rootsey's Papers, and Mr.Thornp- 

 son's Analysis of Sulphate of Baryt'es ft ill appear in our 

 next number. Met^rvh- 



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