OP ARTS AND SCIENCES. 11 



V. 0.4468 grm. gave 0.7246 grm. CO2 and 0.271 grm. HO. 

 VI. 0.7073 grm. gave 0.0137 grm. NH.Cl. PtCl^. 

 VII. 1.9168 grm. gave 0.032 grm. NH4CI. PtClg. 



Corresponding in 100 parts to 



I. II. Average. 



Carbon 43.79 44.22 44.01 



Hydrogen 6.60 6.74 6.67 



Nitrogen 0.12 0.10 0.11 



Ash 0.33 0.33 0.33 



Water 16.01 16.01 



Estimated according to the formulae given, we have 



f Nitrogen 0.11 



I Carbon 0.38 



Nitrogenous constituents, <( Hydrogen 0.05 



j Oxygen 0.16 



[ Sulphur 0.01 



o 



0.71 



{ Carbon 43.63 

 Non-nitrogenous constituents, < Hydrogen 6.06 



( Oxygen 48.49 



98.18 



Water not expelled at 100° C. I hydrogen 0.56 

 ^ \ Oxygen 4.48 



5.04 

 Ash 0.33 



104.26 



Reduced to an average percentage we obtain, — 



Dried at 100" C. Fresh. 



Nitrogenous constituents 0.69 0.58 



Inorganic " 0.32 0.26 



Starch, sugar, &c. " 94.16 79.09 

 Water not expelled at 100° C, and 



accidental moisture 4.83 4.06 



Water 16.01 



100.00 100.00 



" No. II. Corn-Starch, No. 2. 



" This specimen differed from No. 1 in being made into lumps in the 

 state in which wheat-starch is usually sold ; it yielded nearly three 

 times as much nitrogen as No. 1, and was therefore not so pure a 

 starch, but better fitted for the purposes of nutrition. 6f its manufac- 

 ture, I was unable to obtain any information. 



VOL. III. 15 



