INDEX 



145 



Pre-Cambrian, late -, 75, 91, 92, 

 112, 121. 134 



Pre-Cambrian, middle -, 92, 98 



Principle of organic (faunal, flo- 

 ral) evolution, 22-24 



Principle of superposition, 22, 24 



Protein, 43, 45-47, 57, 63, 115. 

 121 



Proterozoic, 71 



Protozoa, 127 



Pulse of the earth, 12, 13, 65, 71 



Pyrite, 95. 100. 108, 114 



Pyrite bacteria. 105, 106, 111 



Pyrite sand, 58. 99 



Quartz. 58. 83, 94-97. 99-101, 103- 



107. Ill, 115, 117, 118 

 Quartz diorite, 97. 98 

 Quaternary. 40 



Radiolaria. 75 



Ramdohr, P.. 6, 70. 88, 98-105, 



107-111, 114, 133 

 Rankama. K., 70, 97, 98, 110, 133 

 Rapakivi, 41 

 Red beds, 111-113, 133 

 Reptiles, 127-129 

 Rubidium-strontium method of 



dating. 30, 31, 36-38, 88 

 Russel. R. D. and Farquar, R. M., 



26, 34 



Sahara. 89-92 

 Sand. 96. 97. 99-107, 111 

 Santonian, 40 

 Seacow, 125 

 Seal, 125 



Sedimentation, 65, 94-96 

 Sediments. 22. 24. 25, 28-30, 67. 

 72. 17, 96-99. 109, 111, 113 



Serapis, Temple of -, 17. 18 

 Serra de Jacobina, 70, 99, 108, 109 

 Shapley, R, 123 

 Shield. African -, 72, 76. 77, 89, 



90. 98, 99 

 Shield, Asian -. 71 

 Shield, Australian -. 72 

 Shield. Brazilian -. 72. 98. 99 

 Shield, Canadian -, 71, 77, 83, 98, 



99. 112 

 Shield. Fennoscandian -, 71, 73, 97 

 Siegerland. West Germany, 110 

 Silicates. 94, 95. 116 

 Silification. 76. 83. 85. 87 

 Silurian. 40. 73. 77, \\2. 132 

 Simpson. G. G., 128 

 Smith. William, 22 

 Solar radiation. 122 

 Spitsbergen, 12 

 Stabiae. 15 

 Stromatolites. 90-92 

 Struggle for life. 19 

 Sulphide minerals. 95-97. 99. 100, 



106. 109, 111 

 Sulphur bacteria, 1 1 1 

 Svecofennides, 41, 97 



Terenin. A. R. 50, 51 

 Terent'ev, A. P., 117 

 Tertiary, 40 

 Thin soup", 48, 49, 58, 63. 64, 



117. 118, 129, 134 

 Thorium-lead method of dating, 



30-33, 37, 38 

 Tilton, G. R. and Davis, G. L., 69 

 Time-scale, geological -, 39-41 

 Torridonian, 112 

 Triassic. 40. 112. 132 

 Tsunami. 14 

 Tundra climate. 95. 96 

 Tyler, S. A. and Barghoorn. E. S., 



70, 77, 83-89, 133 



