THE GEOLOGICAL FORMATION AT PORT COLBORNE. 341 



SECTION OF No. i WELL AT PT. COLBORNE. 



Coiniferous 

 L. Helderberg 



Salina 



Clinton 



Medina 



-Drift 



130ft, 



-452ft, S''^lt water. 



454ft, Gas, (sulphurous) 



500ft, 



764;tft, Gas, in Medina Sandstone. 



WTien the salt water was 

 struck, the easing had 

 to be put down, so as to 

 shut oS the salt water. 



-1500fll| 



