The uniform employment of twelve as the divisor and multiplier in tables of weight, distance, time, and space, as well as in arithmetical notation, has all the conveniences of the decimal system of France, and some others besides due to the greater convenience of twelve as a base.

But as regards the larger divisions of time, the Martials are placed at a great disadvantage by the absence of any such intermediate divisions as the Moon has suggested to Terrestrials.

The revolutions of the satellites are too rapid and their periods too brief to be of service in dividing their year of 668-2/3 solar days.

Martial civilisation having taken its rise within the tropics--indeed the equatorial continents, which only here and there extend far into the temperate zone, and two minor continents in the southern ocean, are the only well-peopled portions of the planet--the demarcation of the seasons afforded by the solstices have been comparatively disregarded.

The year is divided into winter and summer, each beginning with the Equinox, and distinguished as the North and South summer respectively.