INDEX 



Stone-lilies, etc. — contd. 



Young of the feather- 

 star — Vaughan 

 Thompson's account 

 established, etc., 291, 

 292 



Common feather-star of to- 

 day — resemblance to 

 its remote Cambrian 

 ancestors, 293 



Encrinus Fossilis of Blu- 

 menbach from rock oi 

 Jurassic age, 289 



Fossil remains, 287 



Known as fossils before 

 they were found in 

 the living state, 286, 

 293 



Number of, and various 

 species, 289, 290, 293 



Stalks, length of — photo- 

 graph, etc., 287 

 Stonesfield, jaw of mammal 



found at, 82, 84, 188 

 Stratification of rocks : 



Hard and soft rock, alter- 

 nate layers : 

 Pictures showing strata 

 of cliff at Lyme Regis, 

 48, 49, 51 



Tilting of strata, 48, 49, 50, 

 51 

 Diagram showing effect 

 of bending or undula- 

 tion of earth's crust, 

 52,53 

 Ripple marks preserved 



in Triassic strata, 53 

 Seaford, chalk at, 50 



Time elapsed during form- 

 ation of strata, esti 

 mate of, 61, 62 



Stratified rocks : 



Footprints on slabs of Tri- 

 assic rock, 53-55 

 Formation of stratified de- 

 posits from material 

 brought down from the 

 land by rivers, 44 

 Fossilized remains found in : 

 Jelly fish preserved in 

 lithographic limestone, 

 photograph, 48 

 Shells embedded in slab 



of Bognor rock, 45 

 Skeleton of animal found 

 in calcareous rock at 

 Montmartre, Paris, 46 

 Succession from simpler 

 to more complex forms 

 of life — diagram, etc., 

 showing position in 

 which animal remains 

 have been found, 60-62 

 Wings of insects, impres- 

 sion preserved in lime- 

 stone, 46, 47 

 Ripple marks and rain- 

 drops, preservation of 

 marks, 53 

 Thickness of systems of 

 strata, diagram, etc., 

 60,61 

 Sturgeon — ganoid set of fishes 

 sturgeon belonging to, 

 248 

 Stylonurus — scorpion - like 



creature, 278, 281 

 Succession of animal life from 

 simpler to more com- 

 plex forms — position 

 in strata in which fos- 

 silized remains have 

 been found, 60-62 



326 



