The prisoners were free, and their joy found vent in the noisiest demonstrations. They employed the rest of the day in repairing the house, which had suffered greatly by the explosion. They cleared away the blocks piled up by the animals, and filled up the rents in the walls, working with might and main, enlivened by the many songs of old Johnson.

Next morning there was a singular rise in the temperature, the thermometer going up to 15° above zero.

This comparative heat lasted several days. In sheltered spots the glass rose as high as 31°, and symptoms of a thaw appeared.

The ice began to crack here and there, and jets of salt water were thrown up, like fountains in an English park. A few days later, the rain fell in torrents.

Thick vapour rose from the snow, giving promise of the speedy disappearance of these immense masses. The sun’s pale disc became deeper in colour, and remained longer above the horizon. The night was scarcely longer than three hours.

Other tokens of spring’s approach were manifest of equal significance, the birds were returning in flocks, and the air resounded with their deafening cries. Hares were seen on the shores of the bay, and mice in such abundance that their burrows completely honeycombed the ground.

The Doctor drew the attention of his companions to the fact, that almost all these animals were beginning to lose their white winter dress, and would soon put on summer attire, while nature was already providing mosses, and poppies, and saxifragas, and short grass for their sustenance. A new world lay beneath that melting snow.

But with these inoffensive animals came back their natural enemies. Foxes and wolves arrived in search of their prey, and dismal howls broke the silence of the short night.

Arctic wolves closely resemble dogs, and their barking would deceive the most practised ears; even the canine race themselves have been deceived by it. Indeed, it seems as if the wily animals employed this ruse to attract the dogs, and make them their prey. Several navigators have mentioned the fact, and the Doctor’s own experience confirmed it. Johnson took care not to let his Greenlanders loose; of Duk there was little fear; nothing could take him in.

For about a fortnight hunting was the principal occupation. There was an abundant supply of fresh meat to be had. They shot partridges, ptarmigans, and snow ortolans, which are delicious eating. The hunters never went far from Fort Providence, for game was so plentiful that it seemed waiting their guns, and the whole bay presented an animated appearance.

The thaw, meanwhile, was making rapid progress. The thermometer stood steadily at 32° above zero, and the water ran down the mountain sides in cataracts, and dashed in torrents through the ravines.

The Doctor lost no time in clearing about an acre of ground, in which he sowed the seeds of anti-scorbutic plants. He just had the pleasure of seeing tiny little green leaves begin to sprout, when the cold returned in full force.

In a single night, the thermometer lost nearly 40°; it went down to 8° below zero. Everything was frozen — birds, quadrupeds, amphibia disappeared as if by magic; seal-holes reclosed, and the ice once more became hard as granite.

The change was most striking; it occurred on the 18th of May, during the night. The Doctor was rather disappointed at having all his work to do again, but Hatteras bore the grievance most unphilosophically, as it interfered with all his plans of speedy departure.

“Do you think we shall have a long spell of this weather, Mr. Clawbonny?” asked Johnson.

“No, my friend, I don’t; it is a last blow from the cold. You see these are his dominions, and he won’t be driven out without making some resistance.”

“He can defend himself pretty well,” said Bell, rubbing his face.

“Yes; but I ought to have waited, and not have wasted my seed like an ignoramus; and all the more as I could, if necessary, have made them sprout by the kitchen stoves.”

“But do you mean to say,” asked Altamont, “that you might have anticipated the sudden change?”

“Of course, and without being a wizard. I ought to have put my seed under the protection of Saint Paucratius and the other two saints, whose fête days fall this month.”

“Absurd! Pray tell me what they have to do with it? What influence can they possibly have on the temperature?”

“An immense one, if we are to believe horticulturists, who call them the patron saints of the frost.”

“And for what reason?”

“Because generally there is a periodical frost in the month of May, and it is coldest from the 11th to the 13th. That is the fact.”

“And how is it explained?”

“In two ways. Some say that a larger number of asteroids come between the earth and the sun at this time of year, and others that the mere melting of the snow necessarily absorbs a large amount of heat, and accounts for the low temperature. Both theories are plausible enough, but the fact remains whichever we accept, and I ought to have remembered it.”

The Doctor was right, for the cold lasted till the end of the month, and put an end to all their hunting expeditions. The old monotonous life in-doors recommenced, and was unmarked by any incident except a serious illness which suddenly attacked Bell. This was violent quinsy, but, under the Doctor’s skilful treatment, it was soon cured. Ice was the only remedy he employed, administered in small pieces, and in twenty- four hours Bell was himself again.

During this compulsory leisure, Clawbonny determined to have a talk with the captain on an important subject — the building of a sloop out of the planks of the Porpoise.

The Do............