Foreign Literature and Science. 395 



the same capacity for caloric ; and that the law which gov- 

 erns this element of heat should be with respect to them, 

 similar to the law of dilatation, in consequence of their con- 

 dition of aeriform fluidity. The memoir of De La Rive and 

 Marcet is published in the Ann. de Chim. et de Phys. for 

 May 1827. 



4. The Dead Sea. — An analysis of the water of the Dead 

 Sea, by C. C. Gmelin, has furnished the following result : — 

 The density of this water at the temperature of 16^ (Cen- 

 tigrade) is 1.21223. 

 It is composed of 

 Chloride of Calcium - - - 3.2141 



Chloride of Magnesium - - 11.7734 



Bromide of Magnesium - - - 0.4393 



Chloride of Sodium - - 7.0777 



Chloride of Potassium - - - 1.6738 



Chloride of Aluminum - - 0.0896 



Chloride of Manganese - - - 0.2117 



Sal Ammoniac - - 0.0075 



Sulphate of Lime - - - 0.0527 



24.5398 

 Water .... 75.4602 



100. 

 Extracted from the Naturwissenschafftiche Abhandlungen. 

 Ann. de Chim. et de Phys. March 1827. 



5. Note on a phenomenon exhibited by Blowing Jflachinesj 

 by M. M. Hackette and Baillet. — M. Hackette has an- 

 nounced to the society of encouragement that, Thenard and 

 Clement have observed in a blowing machine connected with 

 the works of Fourchembault, department of Nievre, a phe- 

 nomenon which appears at first sight, contrary to the general 

 laws of motion. They were shewn that a pine board placed 

 near the opening of the tube of the bellows, was pressed 

 forcibly against the sleeve into which the tube was adjusted. 



M. Hackette produced the same effect with a common 

 double bellows, whose tube or muzzle terminated in the cen- 

 tre of a disk of copper, of about three inches in diameter ; 

 the orifice of the tube, flush with the disk, is one fourth of 

 an inch in diameter. A disk of paper or thin card being 



