FOSSILIZED WINGS 



Fig. 30. — Wings of a Dragon-fly preserved in tlie ancient lime 

 stone of the Carboniferous period or Coal-bearing rocks. 



preserved in fine sandy limestone of Oolitic age. 

 Here (Fig. 32) we have a jelly-fish preserved ; 



Fig. 31. — Pterodactjle skeleton preserved in Lithographic 

 limestone, showing the impression of the membrane of the 

 wings. 



47 



