IN NOVA SCOTIA—FLETCHER. 329 
possible extension of the coal seams beneath it. He showed 
clearly that there is no recognized unconformity between the 
Millstone Grit and Coal Measures in Nova Scotia, that no beds 
equivalent to the conglomerate are known in the southwest part: 
of the Pictou field, where the Millstone Grit is best exposed in 
regular seqnence under the coal measures, and that the supposi- 
tion that “the underlying strata of the Richardson seam rested 
upon the conglomerate dipping to the southward,” which largely 
led Dawson to put the New Glasgow Conglomerate at the base 
of the coal measures, arose from an entire misconception of the 
relation of this seam, (which lies high up in the coal measures, 
1129 feet above the main seam), to the north fault. 
Mr. Poole showed further that although the conglomerate 
apparently coincides in dip with the strata underlying it in the 
district of Pine Tree, its unconformity near the East River west 
of New Glasgow is indisputable. In the country about Green- 
hill, the Middle River and Plainfield, it rests only on metamor- 
phic and Lower Carboniferous rocks. The Devonian rocks of 
Waters Hill “are certainly not overlaid by deposits of an age 
intermediate between Lower Carboniferous and the conglom- 
erate,’ while the latter contains pebbles of strata evidently 
newer than the Lower Carboniferous, regarded by Logan as 
Millstone Grit, by Poole, as possibly upper coal measures. 
The coal measures are nowhere known to rest on the con- 
alomerate and “the strata overlying it are, with the exception 
of the till, the highest in the field,” comparatively little dis- 
turbed, everywhere comformable to it and in some parts of their 
course holding fossils suppoxed to be characteristic of the upper 
Carboniferous or Permian and Triassic. On the other hand, the 
unconformity found below it is characteristic of the contact of 
the base of these so-called Permo-Carboniferous rocks, a; shown 
on Dr, Ells’ geological map of Cumberland County.’ 
1 Trans. N.S. Inst. Se., Vol. II, Part 1, p. 96 and Vol. II, Part 2, p. 156. 
2G.S. C. Report for 1885, Part E. 
Notre.—Reference to the map accompanying Mr. Poole’s paper on the Picto 1 Coal 
Field. Trans. N.S. {nst. Se.. vol. viii, (2nd ser.. vol. i), p 228, will fazilitate the under- 
standing of these notes on the New Glasgow Conglomerate. On Mr. Poole’s map the 
Sesee that Conglomerate and of the other rock-formations of the coal-field are well 
efined. 
