524 



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CHAPTER XLYI. 



IMBEDDma OF OEGAmC EEMAros m SUBAQUEOUS DEPOSITS. 



DIVISION OF THE SUBJECT— IMBEDDING OF TERRESTRIAL ANIMALS AND PLANTS 

 INCREASED SPECIFIC GRAVITY OF WOOD SUNK TO GREAT DEPTHS IN THE SEA 

 DRIFT-TIMBER CARRIED BY THE MACKENZIE INTO SLAVE LAKE AND POLAR 



■ON THE 



SEA FLOATING TREES IN THE MISSISSIPPI IN, THE GULF -STREAM 



COAST OF ICELAND, SPITZBERGEN, AND LABRADOR— SUBMARINE FORESTS 

 —EXAMPLES ON COAST OF HAMPSHIRE AND IN BAY OF FUNDY 



MINERALISATION OF PLANTS IMBEDDING OF INSECTS OF REPTILES 



■BONES OF BIRDS WHY RARE— IMBEDDING OF TERRESTRIAL QUADRUPEDS BY 



RIVER FLOODS— SKELETONS IN RECENT SHELL-MARL— IMBEDDING OF MAMMI- 

 FEROUS REMAINS IN MARINE STRATA, 



Division of the subject.— RB^ying treated of the imbedding 

 of organic remains in deposits formed npon the land, I sliall 

 next consider the including of the same in deposits formed 

 Tinder v^ater. 



It will be convenient to divide this branch of our subject 

 into three parts; considering, first, the various modes 

 whereby the relics of terrestrial species may be buried in 

 subaqueous formations ; secondly, the modes whereby 

 animals and plants inhabiting /re^/^ water may be so entombed; 



strata. 



may 



new 



iuomena above enumerated demand 



of attention than those previously examined, since the depo- 

 sits which originate upon dry land are insignificant in thick- 

 ness, superficial extent, and durability, when contrasted with 

 those of subaqueous origin. At the same time, the study of 

 the latter is beset with greater diificulties ; for we are here 

 concerned with the results of processes much farther removed 

 from the sphere of ordinary observation. There is, indeed, 

 no circumstance which so seriously impedes the acquisition 

 of just views in our science as an habitual disregard of the 



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