216 NOVA SCOTTAN GEOLOGY. — HONEYMAN. 



coincidence of the N. S. Caiboniferous faunas with that of the 

 mountain limestones of G. B. 



We have thus examined the marine fauna of the formations of 

 Pictou county, and found an interesting and beautiful succession 

 of life, with only one serious break, from the Mayhill Sandstone^ 

 intermediate Silurian — of Salter, to the Middle Carboniferous — 

 Coal measures, i. e. 



Beginning with Upper Arisaig A. Mayhill Sandstone, or the 

 possible equivalent of the Medina Sandstone, U. S., we have pro- 

 ceeded upwards through B Arisaig, where equivalent (British or 

 American) is doubtful ; then B' Arisaig, (which is considered by 

 Hall as of Clinton Age, TJ. S.) next we have passed through the 

 C. Arisaig Aymestry Limestone, (according to Salter) Upper 

 Silurian ; then the Upper Ludlow (Salter) or the Lower Helder- 

 berg and " Upper Arisaig " of Acadian Geology. We have 

 bridged the Devonian Gap succeeding, and passed through the 

 Lower Caiboniferous into the Middle. 



