16 NOVA SCOTIAN GEOLOGY—-HONEYMAN. 
a tap-cinder from Londonderry Iron Mines. The multitude of 
Crystals thus formed are considered to be Olivine. 
Did 
Art. [V.—Nova Scotian Grotocy. By THE Rev. D. Honry- 
“MAN, D. C. L, Fellow of the University of Halifaa, 
Curator of the Provincial Museum, Professor of Geology 
in Dalhousie College and University, and Lecturer on 
Geology in the Technological Institute. 
(Read Dec. 9, 1878,) 
I HAVE received from the Rev. D, Sutherland, of Gabarus, 
(near Louisburg,) Cape Breton, an interesting specimen of fossi- 
liferous sandstone. The locality where he found it is described 
as “At a fine spring of water that boils up out of the rock, at the 
roadside, on A. Walker’s farm, Big Ridge, on the road from 
Marion Bridge, (Mira River,) to Gabarus, at about 14 miles, as 
laid down on Church’s map, direct south from Marion Bridge.” 
I have referred to Marion Bridge in my “ Retrospect” of last 
session as the locality where Mr. H. Fletcher, of the Dominion 
Geological Survey, discovered interesting fossiliferous strata, 
which I referred to the horizon of the Upper Lingula Flags of 
Wales, on account of the occurrence of the Trilobite Olenus 
alatus, associated with Agnostus. Mr. Sutherland’s specimen of 
fossiliferous sandstone indicates the width of a fossiliferous band 
14 miles. If the series descends towards Gabarus, we may now 
have reached the horizon of the Lower Lingula Flags. The 
specimen of sandstone before me measures 24 x 3 inches;. its 
thickness is from 5 to 4 tenths of an inch; it is metamorphic 
and suberystalline. One of the sides is weathered; the other is 
fresh ; both are covered with fossils. On the fresh side they are 
very beautiful. The forms are Lingulellw. They are acuminate 
and subcircular. The acuminate forms range from a length ,, and 
a width to in length and in width. The subcireular are in 
the proportion of 4» to ss ; one appears to be circular, i in diameter. 
*Mr. Sutherland has sent to me, two other specimens. One is a 
* May 10, 1879. 
