Rotation, early noted, [108], [109];

how determined, [34];

time of, [34], [160];

disclosed by markings, [32-34], [108].

Sabaeus Sinus, [23], [207], [268], [269].

San Francisco Peaks, [18], [19], [149], [379], [380].

Saturn, [33].

Scepticism, [27], [28], [204].

Schaeberle, [30].

Schiaparelli, [11], [15], [21], [23], [24], [26], [27], [29], [30], [31], [34], [68], [74], [75],