THE PICTOU COAL FIELD— POOLE. 343 



and piercing several distinct layers of shale and sandstone. In 

 the same locality the black shales contain cordaites, ferns and 

 seed vessels, and of fish remains, teeth of Diplodus penetrans, 

 whole lower jaws, scales, sabre-shaped spines and coprolites. 



Boulder Clay. — In this deposit no fossils have been found, but 

 fragments of wood were in 1850 found at a depth of 10 feet in 

 a trial pit north of the Albion Mines quany. 



Map : — As already noted a map is in course of preparation on 

 a scale of 20 cliains to one inch. A tracing of it has been sent 

 to the office of the Geological Survey at Ottawa, where also are 

 retained the original plotting sheets of the field, which in many 

 parts are in minute detail. 



