LOUISBURG—PAST AND PRESENT.—HONEYMAN. 207 
5. A Cannon Ball. Presented by Mr. [McAlpin, Louisburg. 
6. A Hand Grenade. Presented by Lieutenant-Governor 
Archibald. 
7. A Gun Barrel. 
8. A Bayonet. 
9. Pieces of a Shell. 
During the 24 years that have elapsed since my visit to Louis- 
burg our views on the geology of Cape Breton as well as of 
Nova Scotia have undergone considerable change. The rocks on 
Louisburg shore, which I regarded as of igneous origin, are now 
regarded as metamorphic rocks, and instead of being considered 
as of comparatively recent age, ¢. g. Devonian or Upper Silurian, 
they are now regarded as having been formed in Pre- 
ecambrian or Archean time. I have compared them with 
the “Middle Arisaig Series” of the Cobequid Mountain, I. C. R. 
section—Trans. Institute of Nat. Science, Vol. IV, page 475. 
The formation of Mira Ridge which is associated with the 
Louisburg Crystalline rocks and lies between them and the 
Carboniferous, already referred to in a preceding page, are of 
Lower Silurian age, being approximately equivalent to the Upper 
Lingula Flags of Wales. In the upper part, next to 
the Carboniferous, Mr. Fletcher of the Geological Survey, 
found abundance of fragments of Trilobitez, of Genera Olenus, 
and Agnostus. In a position apparently lower, and next to 
the Crystalline rocks of Gabarus, the Rev. Donald Sutherland 
found Sandstones with numerous Lingulelle and Obolelle. (2) 
Mr. Bowser, of Halifax, collected at Scatarie specimens of beauti- 
ful Jaspideous Conglomerate and Breccias, which I have regarded 
as a part of the Louisburg series.—Tvrans., vol. iv, pages 252 and 
258. These are in our museum collection. The geological 
formations are therefore Archean, Lower Silurian, and Carboni- 
ferous. 
RAILWAYS. 
Louisburg Harbour has again come into prominence in con- 
nection with the Railway development of the Dominion of 
Canada. This time it appears as a rival to Halifax 
