At that time of the year, the thermometer was already constantly below freezing point. The frequent rains changed to snow, and the weather became gloomy. Each day the sun dipped lower below the horizon, and on the 30th, for a few minutes, he was out of sight altogether. However, the little sloop sailed steadily on without stopping an instant. They knew what fatigues and obstacles a land journey involved, if they should be forced to adopt it, and no time was to be lost, for soon the open water would harden to firm ground; already the young ice had begun to form. In these high latitudes there is neither spring nor autumn; winter follows close on the heels of summer. On the 31st the first stars glimmered overhead, and from that time forwards there was continual fog, which considerably impeded navigation. The Doctor became very uneasy at these multiplied indications of approaching winter. He knew the difficulties Sir John Ross had to contend with after he left his ship to try and reach Baffin's Bay, and how, after all, he was compelled to return and pass a fourth winter on board. It was bad enough with shelter and food and fuel, but if any such calamity befell the survivors of the Forward, if they were obliged to stop or return, they were lost. [Illustration: ] The Doctor said nothing of his anxieties to his companions, but only urged them to get as far east as possible. At last, after thirty days' tolerably quick sailing, and after battling for forty-eight hours against the increasing drift ice, and risking the frail sloop a hundred times, the navigators saw themselves blocked in on all sides. Further progress was impossible, for the sea was frozen in every direction, and the thermometer was only 15 deg. above zero. Altamont made a reckoning with scrupulous precision, and found they were in 77 deg.15' latitude, and 85 deg. 2' longitude. "This is our exact position then," said the Doctor. "We are in South Lincoln, just at Cape Eden, and are entering Jones' Sound. With a little more good luck, we should have found open water right to Baffin's Bay. But we must not grumble. If my poor Hatteras had found as navigable a sea at first, he would have soon reached the Pole. His men would not have deserted him, and his brain would not have given way under the pressure of terrible trial." "I suppose, then," said Altamont, "our only course is to leave the sloop, and get by sledge to the east coast of Lincoln." "Yes; but I think we should go through Jones' Sound, and get to South Devon instead of crossing Lincoln." "Why?" "Because the nearer we get to Lancaster Sound, the more chance we have of meeting whalers." "You are right; but I question whether the ice is firm enough to make it practicable." "We'll try," replied Clawbonny.