_ Scientific Intelligence. 251 
Per-centage, carbonic acid, 
Results of analysis. charcoal and sand excluded. 
Chlorid of sodium, 4:24 ‘ 4-66 
Phosphoric acid, . 15:12 ; , 16-64 
Sulphuric acid, . 4-4U ‘ , 4:89 
Silicic acid, . a 9-90 . . 10°89 
Carbonic acid, . 3°83 ; ‘ — 
Charcoal and sand, 5:98 i —- 
100°65 100-00 
4. Ninyong Tea; by Charles S. Homer, Jr., of the Cambridge 
Laboratory. 
Per-centage of ash, 4:73. 
The analysis afforded in 100 parts— 
Per-centage, carbonic acid, 
Results of analysis. charcoal and sand excluded, 
Potassa, ‘75 
oda, ‘ 11:24 12:88 
Lime, . é é 7:32 8:39 
Peroxyd of iron, 16°84 . ts PAGSE 
Chlorid of sodium, 2:84 t : 3°25 
Phosphoric acid, . 15°22 : ; 17°44 
Sulphuric acid, . re 4-76 
Silica : : 4:86 ; : 559 
Carbonic acid : 401 ; ‘ a 2 
Charcoal and sand, 9:09 ; , ee 
100-33 100-00 
SCIENTIFIC INTELLIGENCE. 
I. Cuemistry AND Puysics. , 
The author first determined the specific heat of ice between —21° C. 
—2° C., employing in the calorimeter a solution of salt the specific 
heat of which had been previously determined. The specific heat of 
ice between the limits above mentioned was found to be 0°48. In de- 
termining the latent heat the ice was formed into cylinders in the axes 
