State of the polar ice since 1845--Sir John Franklin's track--Probable
existence of islands north of Behring's Straits--Possibility of
subsisting in the Arctic islands--News from the
Investigator--Necessity of searching in a higher latitude than the
Investigator visited--Franklin's misfortunes due to Scientific
Errors--Relative levels of the Atlantic and Pacific Oceans--The Arctic
seas more accessible in a few years--Conclusion. 233