[TYRRELL] PRESIDENTIAL ADDRESS 5 
was again taken by the French under La Perouse, who burnt it to 
the ground, and carried off Humphrey Martin, the governor, and some 
of the employees to France, but in the following year the country 
was restored to the British, and the fort was rebuilt and reoccupied 
by the Hudson’s Bay Company. 
In 1745, Joseph Robson, an engineer in the employ of the Hud- 
son’s Bay Company, surveyed the mouths of the Nelson and Hayes 
PLATE N° I. 
PLANS of YORK and PRINCE of WALES'S FORTS 
at à “py 8 ee v4 ue œ, iA = 
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Plan of old York Fort. Joseph Robson, 1745. 
rivers, taking his bearings with a compass, with proper corrections 
for magnetic variations, and measuring his distances with a wheel, 
the circumference of which had been accurately determined. Robson’s 
