As for the water and the other liquors, the travellers had enough only for two months.
Relying on the latest observations of astronomers, they had convinced themselves that the Moon's atmosphere, being heavy, dense and thick in the deep valleys, springs and streams of water could hardly fail to show themselves there.

During the journey, therefore, and for the first year of their installation on the Lunar continent, the daring travellers would be pretty safe from all danger of hunger or thirst.
The air supply proved also to be quite satisfactory.

The _Reiset_ and _Regnault_ apparatus for producing oxygen contained a supply of chlorate of potash sufficient for two months.

As the productive material had to be maintained at a temperature of between 7 and 8 hundred degrees Fahr., a steady consumption of gas was required; but here too the supply far exceeded the demand.

The whole arrangement worked charmingly, requiring only an odd glance now and then.