Foreign Ltiterature and Science. 379 



ble conducts twice as well as porcelain, but the conducting 

 power of marble is nevertheless but — part of that of iron. 

 Brick has much the same power as porcelain, namely, 

 half that of marble. ^n. de Chem. Jan. 1822. 



4. Means of preserving eggs. — M. Cadet of Paris, re- 

 lates that on the 24th of November, 1820, he put half a 

 dozen fresh eggs into a glass jar, and filled up the jar with 

 lime water, containing an excess of lime. On the Slh of 

 September, 1821, the Council of Safety charged Messrs. 

 Marc and Pariset to examine the result of this trial. One 

 of the eggs, which by accident was cracked without being 

 broken, was found to be entirely coagulated, but did not 

 emit the least unpleasant odour. The others were full and 

 had preserved entirely their transparency. When boiled 

 during three minutes, they appeared very delicate and of an 

 excellent taste. Idem, 



5. Steam Boats are employed at Stockholm (Sweden) 

 for the purpose of towing ships into and out of port, when 

 contrary winds prevail; — and this process is found to be 

 much preferable to the method before used, in regard both 

 to expense and celerity. 



6. Mechanics. — The Emperor of Germany, convinced 

 of the advantages which will result from a more profound 

 knowledge of the theory and proper construction of water 

 mills has lately offered a thousand golden ducats (about 

 ^2000) to the author, whether a native or a foreigner, who, 

 in the course of a year, shall furnish the best work on that 

 subject. As it is desiajned for the use of workmen, great 

 perspicuity will be requisite. Rev. Ency. 



7. GENEVA. — Society for the advancement of Arts. — This 

 society was founded in 1776, b} the instrumentality of the 

 celebrated Saussure. It has rendered very important ser- 

 vices to the Cantons, and with a view to more extended 

 usefulness, it has recently undergone some internal modifi- 

 cation. It is now composed of three great divisions or 

 classes, viz: that of the f.ne arts, that of the arts of indus- 

 try, economy, and commerce, and that of agriculture. Any 

 person who feels interested in the progress of the useful 



Vol. V. 49 



