376 



PALEOZOIC ROCKS OF THE HUDSON BAY REGION 



JOHNSTON Series or Desk maps 



NO;-D 5 



COPTRIOMT 1914. A. J. NYSTROM & CO.. CMICAOO. 



FiGiRE 4. — Generalized Map of North America during Period of Deposition of Abitidi 



Hirer Limestone 



Early Upper Devonian. Lined areas represent seas. 



