218 NITROGEN BODIES OF MODERN CHEMISTRY. 



its transportation and the innumerable consequent accidents sliould be 

 encountered. 



It is possible that this dangerous, untamed laborer, who performs the 

 compulsory service of cleaviug our rocks and mountains, will yet be- 

 come civilized; it may be that, through progress in mechanics, in 

 chemistry, and in general science, it will become possible to subdivide 

 aud control the explosion, and to use it, thus controlled and modified, 

 as the most convenient source of power to move our pistons and propel 

 our machinerv. 



