232 A rctic and A ntarctic Exploration [part i 
proved that Boothia was a peninsula, not an island. 
The Gulf of Akuli is the termination of Prince Regent's 
Inlet. • 
In 1818, as we have seen, nothing was known of the 
northern coast of America but the mouths of the Mackenzie 
and Coppermine rivers. In 1848 the whole coast had 
been mapped, from the Icy Cape of Cook to the Fury 
and Hecla Strait of Parry, a distance of 1000 miles. 
Franklin, Richardson, Back, Dease, Simpson, and Rae 
were the discoverers, and their achievements entailed 
deeds of heroism such as have never been surpassed, 
and seldom equalled, in the whole history of discovery. 
