240 SCIENTIFIC KEWS. 



Mineral water Mr. Vauquelin ha3 analysed the thermal water of Neris, 

 of Neris. near Montluijoii, in the department of the Allier. Two 



ounces of the solid matter left by evaporating the water on 

 the spot had been sent to him : but he was not informed of 

 how much water it was the produce. The results of hit 

 analysis were. 



Carbonate of soda 33-34 



Sulphate of soda 28-68 



Muriate of soda 15*28 



Carbonate of lime 2*80 



Silex 8'34 



Water 902 



Animal matter, and loss ........ 2*54 



100* 

 The silex he supposes to have been held in solution by 

 the water; and he thinks it probable, that both this and the 

 animal matter were indebted for their solubility to the pre- 

 sence of the carbonate of soda. 

 Mineral waier He likewise analysed the residuum of the water of Ar- 

 uf Argemieres. gentieres, sent him in the same way by the same physician. 

 The results were. 



Carbonate of soda 32*08 



Sulphate of soda 15*7o 



Muriate of soda 1*39 



Siliceous sand 1 0*42 



Carbonate of magnesia 34*37 



lime 5*21 



Animal matter 0*78 



■i 100* 



Mathematical The Twelfth Number of Leybourn's Mathematical Re- 

 Repository, pository contains — 1. Solutions to the Mathematical Ques- 

 tions proposed in Number X. 2. On the irreducible Case 

 of Cubic Equations. 3. New Properties of the Conic 

 Sections. 4. Indeterminate Problems. 5. On the Ellipse 

 and Hyperbola. 6. On the Roots of Equations of all Di- 

 mensions. 7- Properties of the Right-angled Triangle. 8. 

 Continuation of Le Gendre's Memoir on Elliptic Transcen- 

 dentals. Q. A series of new Questions to be answered in a 

 subsequent number. 



To CorresflMtWfs. 

 Dr. Henderson's paper is oWh^RT to be postponed till 

 next month. 



