We already possess,in the artesian well,the means of converting unfertile wastes into rich corn fields; and what unknown forces may not yet be hidden in the interior of the earth?

• 我们已经能够靠了自流井把不毛之地变成膏壤，地质也许还有什么未知力量在潜伏中有待发现，谁又能断言呢?