396 Scientific Intelligence. [May, 



rectly a test for alkalies, so is the other for acids. "When infusion of 

 alkar.et is made blue for the latter purpose, the smallest quantity of 

 alkali should be used that is adequate to the effect, in order to preserve 

 the delicacy of the test. — (American Journal.) 



II. Analysis of the Mineral Waters of Carlsbad. By M. Berzelius. 



These waters deposit a calcareous tufa, of a striated crystalline tex- 

 ture, which possesses all the characters of arragonite. Prof. Stro- 

 meyer's discovery, that arragonite always contains strontian, induced 

 M. Berzelius to search for that earth in this tufa, and in the waters by 

 which it is deposited; and he has succeeded in finding a small quantity 

 of it in both. The following is the general result of his analysis of the 

 waters of the principal spring, called the Sprudsl. 



In 1000 parts of the water, there are of 



Sulphate of soda 258714. 



Carbonate of ditto 1-25200 



Muriate of ditto 1-04-893 



Carbonate of lime 0-31219 



Fluate of ditto 0-00331 



Phosphate of ditto 000019 



Carbonate of strontian 000097 



Carbonate of magnesia 018221 



Phosphate of alumina 0-00034> 



Carbonate of iron 0-00424- 



Silica 0-07504- 



5-46656 



With traces of carbonate of manganese.— (Ann. de Chim. et de 

 Phys. xxi. 246.) 



III. Fothergillian Prize Medal to be given by the Medical Society of 

 London, Bolt-court, Fleet-street. 



In conformity with the will of the late Dr. Anthony Fothergill, the 

 Society resolve to give annually to the author of the best dissertation on 

 a subject proposed by them, a gold medal, value 20 guineas, called the 

 « Fothergillian medal," for which the learned of all countries are 

 invited as candidates. 



1. Each dissertation offered for this prize must be delivered to the 

 Registrar in the Latin or English language, on or before the 31st day 

 of December. 



2. With it must be delivered a sealed packet, with some motto or 

 device on the outside ; and within, the author's name and designation; 

 and the same motto or device must be put on the dissertation, that 

 the Society may know how to address the successful candidate. 



3. No paper in the hand-writing of the author, or with his name 

 affixed can be received ; and if the author of any paper shall discover 

 himself to the Committee of Papers, or to any member thereof, such 

 paper will be excluded from all competition for the medal. 



4. The prize essay will be read before the Society, at the meeting 

 preceding the Anniversary Meeting of the Society, in March, 1824. 



5. The prize medal will be presented to the successful candidate, or 

 his substitute, at the Anniversary Meeting of the Society. 



