372, Foreign Literature and Science. 
Francis de Paul, which is building at Naples, from the de- 
sign of the architect Bianchi. 
5. Capacity of Gas for Caloric.—J. H. Mallet, secretary 
of the Academy of Lyons, has published experiments, very 
judiciously contrived, upon one of the most important prob- 
lems of philosophy, the constitution of mixed gasses, and 
their capacity for Caloric. He thinks he has shown that at 
the same temperature the particles of different gasses are at 
equal distances, that their molecules have different volumes, 
and that the quantity of caloric which a gas can admit de- 
pends upon the extent of the space which separates the mo- 
lecules. 
6. Natural History.—M. Adolphus Brogniart has discov- 
ered inthe ponds of the forest of Fontainbleau, a new crus- 
tacea which he bas named limnadia, and which is remarka- 
ble by its size. It appears to form a very distinct species. 
All the individuals which Mr. B. has remarked, to the num- 
ber of a thousand, had eggs upon their backs. He has not 
yet been able to account for this striking peculiarity. 
7. Dolcoath Mine—The magnificent copper mine of 
Dolcoath in Cornwall, employs under ground 750 persons, 
consumes monthly 3000 lbs. of gunpowder and 5000 Ibs. of 
candles. It is 1400 feet deep, and contains within it 
7,000,000 of cubic feet of excavated space. The pumps 
bring up daily from this mine 120,000 cubic feet of water. 
8. Heat of the Earth.—It appears from the statements of 
Dr. Forbes and R. W. Fox, of Cornwall, that the tempera- 
ture of the mines in that country increases progressively 
about one degree for every 60 or 70 feet of descent. The 
maximum temperature of the deepest mines (1300 to 1400 
feet,) is about 80 degrees of Fahrenheit, or 28 degrees 
above the mean climate of the country. 
9. Test for Barytes and Strontian.—These earths may 
be readily distinguished from each other by the following 
process :—Make a solution of the earth, which ever it may 
be, either by nitric, muriatic, or some other acid, which will 
form a soluble salt with it; add solution of sulphate of soda 
