Per cent. Carbonic acid............................ 0.60 Carbonic oxide........................... 0.60 Oxygen................................... 0.80 Olefiant gas............................. 1.00 Ethylic hydride.......................... 5.00 Marsh gas............................... 67.00 Hydrogen................................ 22.00 Nitrogen................................. 3.00 "Now, by the specific gravity of these gases we find that 100 liters of this gas will weigh 64.8585 grammes, thus: Weight, Liters. grammes. Marsh gas................. 67.0 48.0256 Olefiant gas.............. 1.0 1.2534 Ethylic hydride........... 5.0 6.7200 Hydrogen.................. 22.0 1.9712 Nitrogen.................. 3.0 3.7632 Carbonic acid............. 0.6 1.2257 Carbonic oxide............ 0.6 0.7526 Oxygen.................... 0.8 1.1468 ------- Total................................... 64.8585 "Then, if we take the heat units of these gases, we will find: Heat units Grammes. contained. Marsh gas................ 48.0256 627,358 Olefiant gas............. 1.2534 14,910 Ethylic hydride.......... 6.7200 77,679 Hydrogen................. 1.9712 67,929 Carbonic oxide........... 0.7526 1,808 Nitrogen................. 3.7630 ----- Carbonic acid............ 1.2257 ----- Oxygen................... 1.1468 ----- ------- ------- Totals 64.8585 789,694