. Bulletin - United States National Museum . ility is incidental upon many uncertainfactors, and obviously it would be unwise to grow into dependenceupon them or permit their presence to offset action regarding theefficient utilization of our own resource. At best, these deposits and * An interesting war-time development in connection with gas oil has heen the, installa-tion of toluol-recovery plants in large municipal gas plants for the recovery of toluolformed from the oil in the course of gas manufacture, thus adding to the supply oftoluol contributed by the by-product coke oven. It is a st
. Bulletin - United States National Museum . ility is incidental upon many uncertainfactors, and obviously it would be unwise to grow into dependenceupon them or permit their presence to offset action regarding theefficient utilization of our own resource. At best, these deposits and * An interesting war-time development in connection with gas oil has heen the, installa-tion of toluol-recovery plants in large municipal gas plants for the recovery of toluolformed from the oil in the course of gas manufacture, thus adding to the supply oftoluol contributed by the by-product coke oven. It is a striking coincidence that bothcoal and petroleum furnish the basis for the manufacture of one of the most effectiveexplosives known. » Coal and hydroelectricity should also assist in replacing the oil-fired steam engine. »Little in the way of petroleum imports may be expected from other parts of theworld ; South American needs will probably more than absorb the future output of thatcontinent. U, S. NATIONAL MUSEUM BULLETIN 102, VOL. I PL. 7. The Successor to Petroleum. Cliffs of Oil Shale near Grand Valley, by courtesy of Denver & Rio Grande Railroad. PSTEOLEUM. 77 especially those in Mexico, if fully available and barring inter-national complications, would put ojff the period of petroleum ex-haustion in the United States for only a matter of say a couple ofdecades; hence their presence does not change the urgency of thedomestic issue. Moreover, the high-use employment of these de-posits—the output is now used dominantly for fuel purposes—would be to the best interest of Great Britain, the United States,and other countries using the output, not to mention the advantageaccruing to the producing Republics themselves. Indeed, it wouldseem, so far as such things may be determined from the outside,that Mexico would take the lead among the Republics concerned indeveloping a policy in regard to petroleum development that wouldprevent production from exceeding
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