[81], [114], [115], [120], [121], [173], [177], [186], [192], [212], [217], [221], [247], [249],

[265], [282], [313], [314], [325], [337], [367], [373].

Seas (see Dark Regions).

southern, [92];

formerly on Mars and the Moon, [129];

internal absorption of, [147].

Seasonal change, metabolic, [169];

in canals, [168], [169], [285], [373].

Seasons, like our own, [34], [35], [166];

length of, [48], [79], [161];