and on the Nut lire of the Diamond. 2-27 



We could not perceive any dullness on the surface of the 

 mercury in the gasometers, or any appearance of mois- 

 ture. 



On introducing lime-water to a hundred parts of the ga? 

 in the eudiometer, a dense white precipitate was fornicdy and 

 36 parts absorbed ; the test for oxygen absorbed 60, and a- 

 residuum of 4 was left. 



Correction for temperature. 

 CO** 480)49-84(0-]03 49-64 



50 4 '41 add for femp. 



4 dlflercnce. -412 30-25 



Correction for pressure. 



30 : 30-20 : : 50-25 : 50-58. 



Tlic quantity of oxygen at the mean was 50-53 cubic 



inches. 



100 : 36 : : 50-58 : 18-00 cubic inches. 



The quantity of carbonic acid gas produced was 18-20' 

 cubic inches. 



100 : 47-26: : 18-20 : : 8-60 graim. 

 8-60 : 2-49 : : lOQ : 28-95. 

 Then 100 grains of carbonic acid gas contain 28- Q^ of 

 diamond. 



Calculation by oxygert. . 

 100 : 33-82 ; : 18-20 : 6-15 grains of bXygen eonsumedv 

 2^-49 grains of diamoiKl. 



8-64 

 CalcuTat. by carbonic acid 860 



•&4 difference. 



8-64 : 249 : : lOO : 28'81. 

 Tluis, if we calculate ufion'the oxygen consumed, lOO" 

 grains of carbonic acid gas contain 28-81 of diamond. 



[.To be continued.] 



p i XX?CIV. Aa 



