W. G. 



Mixter — Cc 



Minutes. 



Temperature 







18*421 



1 



18-426 



2 



18-431 



3 



18-436 



4 



21-8 



5 



21-810 



6 



21-816 



1 



21-813 



8 



21-811 



9 



21-809 



10 



21-807 



11 



21-805 



12 



21*803 



13 



21-802 



14 



21-801 



15 



21-399 



Carbon and its Heat of Combustion. 443 



Temperature interval. 

 21-811 — 18*436 + 0-007 = 3'382° 



Heat observed, 3547x3-382= 11996 c 

 " of oxidation of iron — 70'4 C 



" of formation of silver nitrate — 8*2 C 



Heat of combustion of 1-5048 



gram of carbon 11917.4 ( 



Heat of combustion of 1 gram 



of carbon 7919-6' 



Experiment 2. — Carbon 1-4304, iron 0-040, silver dissolved 

 0-048, oxygen 10*5, water and water equivalent, 3637*6 grams. 



Minutes. Temperature. Temperature interval. 



19-263 



1 19-268 22-394 — 18-272 + 0-003 = 3-125° 



3 19-272 



4 22- Heat observed, 3637-6X3-125 = 11367-5 C 



5 22-39 " of oxidation of iron —64- c 



6 22-395 " of formation of silver nitrate -10'4 C 



7 22-394 



8 22-392 11293-l c 



9 22-392 For 1 gram of carbon 7895- c 



10 22-392 



11 22-391 



12 22-390 



13 22-389 



14 22-388 



Experiment 3. — Carbon 1-5354, iron 0-031, silver dissolved 

 0'064, oxygen 10*6, water and water equivalent 3618 grams. 



Minutes. Temperature. Temperature interval. 



19-104 



1 19-108 22-466 — 19-112 + 0-010 = 3-364° 



2 19-112 



3 22-25 Heat observed, 3618X3-364 =12171 c 



4 22-472 " of oxidation of iron — 496 c 



5 22-472 " of formation of silver nitrate — 13*6 C 



6 22-470 



7 22-466 12107-8 C 



8 22-463 For 1 gram of carbon 7885*7 C 



9 22-461 



10 22-458 



11 22-456 



12 22-454 



13 22-451 



14 22-449 



