agz 



FROM FISH TO PHILOSOPHER 



Snakes, marine, 172 

 Sodixim bicarbonate, secre- 

 tion by Marshall's gland, 



249 

 Sodium chloride, see Salt 

 Solar system, 5 

 Species, evolution, 19 f. 

 Speny, R. W., 220 

 Sphenodon, 96, 128 

 Squalus acanthias, 65, 248- 



49 

 Starling, E. H., 47 

 Stegosaurus, 127 

 Stegoselachii, 56, 67 

 Stickleback ( Gastrosteus ) , 



113 

 St Lawrence River, 58 

 Strauss, M. B., 33 

 Sturgeon (Acipenser), 114 f. 

 'Subconscious mind,' 203 

 Sweat, loss of salt and water, 



155 f. 

 Synapse, 187 f. 

 Syngnathus, see Pipefish 



Taconic Revolution, 57 

 Tarsius, 183-84 

 Technical Notes, 227 

 Telanthropus, 182 

 Teluk Anson, 68 f . 

 Temperatures in the earth, 



4-5 



Terrapin (Malacolemys ter- 

 rapin), 172 



Tetrapods, 85 



Therapsida, 132 f. 



Theriodontia, 122, 132 



Toadfish (Opsanus), 106, 

 111 



Toads, SEE Aniura 



Trachodon, 128 



Trilobites, Ordovician, 58 

 Trimethylamine oxide, 248 

 Tubular excretion, 41, 245 f. 

 reabsorption, 39-40, 245 f . 

 Tubules, renal, see Nephron 

 Tubular transport systems, 



245 f. 

 Turtles 



green (Chelonia my das), 



173, 269 f . 

 loggerhead ( Caretta ca- 



retta), 172, 269 f. 

 marine, 172 

 Tyndall, John, 222 

 Tyrannosaurus, 128-30 



Ural Mountains, 118 



Urea, 248 



excretion by gills, 41 

 formation in fishes, etc., 



254-55 

 retention habitus of elas- 

 mobranchs, 62-64 

 Urey, H. C, 228 

 Uric acid excretion in reptiles 



and birds, 124 f . 

 Uricotelic, see Uric acid 

 Urine 



acidification, in marine 



fishes, 267 

 collection, in fishes, etc., 51 

 flow, minimal, in man, 146 

 osmotic concentration, 61 

 Urochordata, 233, 242 

 Urodeles, 94, 101 



Vacuoles, contractile, 241 

 Variation and evolution, 13 

 Variation, natural, 18 

 Vertebrates 



fresh-water origin, 233-36 



