360 TEREDO NAVALIS IN NOVA SCOTIA — MURPHY. 
The specimens of its borings obtained from Pictou, which I 
place before you, leave no doubt that itis the work of the Teredo, 
At the Pine Tree Gut, about six miles from New Glasgow, and 
eight from Pictou, where the railway crosses the tidal estuary, 
the Teredo has attacked the piles of the railway bridge, which 
we shall hereafter refer to. 
At the marine slip, Strait of Canseau, distinct traces of the 
work of the Teredo are quite visible. 
At Sydney, C. B., every wharf suffers by their depredations, . 
except the pier of the Sydney and Louisburg Railway, which is 
an example of how their attacks can be prevented. I shall here- 
after refer to this structure. 
At Louisburg, and at Margaree, they are also quite active, so 
that I think we may fairly assume that they are to be found in 
the other harbours intermediate between those places. 
Returning to the Strait of Canseau, and proceeding westwardly 
towards Halifax, we are in the region of the Limnoria Lignoru m, 
and although traces of the Teredo may be found at the ship 
yards and marine slips all along our shores further south, yet 
they are neither numerous nor destructive. The wood eating 
Limnorize now become the active agents of destruction, Myriads 
of them are visible on the piles of our wharves, and en every 
piece of submerged wood within the zone of their attack. From 
Whitehaven to Halifax, at Mahone Bay, Lockeport, Shelburne, 
Yarmouth, St. Mary’s Bay and at Digby the attacks of these 
little borers are vexatiously conspicuous. A pile at the old yacht 
club house in Halifax Harbour, 12 inches in diameter, was reduced 
to 6 inches in seven years. Along the Atlantic shore they de- 
stroy timber over its submerged surface within the limits of its 
workings at the rate of about one inch per annum. Specimens 
from Digby, which I submit, show a much less degree of destruc- 
tion. Those four specimens of piles, taken from Digby wharf, 
13 years submerged, were, when driven, 10, 12, 13 and 15 inches 
respectively, they are now 6$,-5, 7 and 6 in the order in which 
they are first named. Along St. Mary’s Bay, Annapolis Basin, 
and Minas Channel, inlets of the Bay of Fundy, the average rate 
of destruction seems to be about the same as at Digby, namely, 
