(from sport and travel from the northland of canada by david t. hanbury, 1904, chapter vi "life in an eskimo camp on baker lake")

this passage saves a considerable distance, about twenty miles i should judge. the charts do not mark the point as a peninsula.

a phenomenon of these parts is the mirage, which is much more marked on some days than on others. it is observed on the larger lakes and along the coast particularly. land which is only a short distance away appears suspended in mid-air, and great distortion takes place. captain santos informed me that owing to this peculiarity it is impossible to get good sights at sea.

the voyage up chesterfield inlet was slow and far from pleasant; the cold was severe, for although the thermometer never dropped even to zero, it was our first touch of winder cold, and was keenly felt. we had to sit still for twelve hours at a stretch, everything on board coated with ice and a cutting wind in our teeth. the whale-boat leaked so badly that every night it had to be unloaded and in the morning loaded afresh. this necessitated wading. we all had long sealskin boots luckily, but these would freeze stiff directly we left the water.

which of the following most belongs in a set of notes about the passage?

mirages are known as optical illusions.

the ship's voyage was freezing.

seals were often killed for their sealskin.

wading in cold water can be harmful.