Roads, [114], [187]

Robertson, [316]

Robespierre, [345], [346], [434]

Robinson, J. H., [284]

“Rocket,” Stephenson’s, [356]

Rock pictures, [57], [78]

Rocks as record of beginnings of life, [11] et seq.

S

Sabellians, [224]

Sabre-toothed tiger, [43]