Did he obtain air using chemical methods, releasing the oxygen contained in potassium chlorate by heating it, meanwhile absorbing the carbon dioxide with potassium hydroxide?

他是用化学方法获得空气的吗？是用氯酸钾加热放出氧气，还是用氢氧化钾吸收二氧化碳气呢？

Then here's how to calculate it, I replied. In one hour each man consumes the oxygen contained in 100 liters of air, hence during twenty-four hours the oxygen contained in 2,400 liters.

下面就是对于这问题的算法，我回答，每个人每小时消费一百升·空气中含有的氧，二十四小时就消费二千四百升含有的氧。