152 Intelligence and Miscellaneous Articles. 



bonic acid it increases about in proportion to the partial pressure 

 of the detonating gas. 



4. If, on the contrary, detonating gas is mixed with oxygen, the 

 length of the shortest spark producing ignition at first decreases 

 and then increases. The minimum is attained with a mixture of 

 equal volumes of hydrogen and oxygen. 



The investigation is being continued. — Wiener Berichte, Dec. 17, 

 1896. 



THE BRESSA PEIZE. 



The Royal Academy of Sciences of Turin, in accordance with 

 the last will and testament of Dr. Cesare Alessandro Bressa, and in 

 conformity with the Programme published December 7th, 1876, 

 announces that the term for competition for scientific works and 

 discoveries made in the four previous years 1893-96, to which 

 only Italian Authors and Inventors were entitled, was closed on 

 December 31st, 1896. 



The Academy now gives notice that from the 1st of January 

 1895 the new term for competition for the eleventh Bressa Prize 

 has begun, to which, according to the testator's will, scientific 

 men and inventors of all nations will be admitted. A prize shall 

 therefore be awarded to the scientific Author or Inventor, whatever 

 his nationality, who during the years 1895-98, "according to the 

 judgment of the Eoyal Academy of Sciences of Turin, shall have 

 made the most important and useful discovery, or published the 

 most valuable work on physical and experimental Science, Natural 

 History, Mathematics, Chemistry, Physiology and Pathology, as 

 well as Geology, History, Geography and Statistics." 



The term will be closed at the end of December 1898. 



The sum fixed for the prize, deducting income tax, will be 

 9600 (nine thousand and six hundred) francs. 



Competitions must be sent in within the above-stated time, 

 accompanied by a letter to the President of the Academy. "Works 

 must be in print ; manuscripts are discarded. Unsuccessful com- 

 petitive works are not returned. 



None of the national members, resident or non-resident, of the 

 Turin Academy can obtain the prize. 



The Academy awards the, prize to the most worthy scientific person, 

 even if not entering into competition. 



The President of the Academy, 

 G. Cable. 

 Turin, January 1, 1897. 



