NOTES ON THE OANNOOK CHASE OOALFIELD 35 
The work of hunting for and obtaining good specimens of 
fossils from the pits is often slow and laborious work, requiring 
much patience and perseverance. Some of the specimens, as will be 
seen by those exhibited, are so minute that in the imperfect light ob- 
tainable in a mine it is most difficult to detect them. At old 
collieries where only two or three of the thickest seams are perhaps 
being worked the range of observation is extremely limited, 
and it is often the case that only the roofs and floors of these 
seams are open to inspection. It is.a new colliery where a shaft 
is being sunk or where boring is in progress that the best 
opportunity occurs for systematic and thorough investigation, and no 
such chance should be lost. 
It is to be hoped that in the future more attention will be given 
to this branch of research which, while it adds to scientific 
knowledge, has also a great value in determining facts upon which 
one of four staple industries depends. 
