The water of this Polar Sea presented some peculiar features worth mentioning. In colour it was a faint ultramarine blue, and possessed such wonderful transparency that one seemed to gaze down into fathomless depths. These depths were lighted up, no doubt, by some electrical phenomenon, and so many varieties of living creatures were visible that the vessel seemed to be sailing over a vast aquarium.

Innumerable flocks of birds were flying over the surface of this marvellous ocean, darkening the sky like thick heavy storm-clouds. Water-fowl of every description were among them, from the albatross to the penguin, and all of gigantic proportions. Their cries were absolutely deafening, and some of them had such

[Illustration: ]

immense, wide-spreading wings, that they covered the sloop completely as they flew over. The Doctor thought himself a good naturalist, but he found his science greatly at fault, for many a species here was wholly unknown to any ornithological society.

[Illustration: And the Doctor leaning over the side of the vessel, could see the whales and the dolphins, and all the rest of the monsters of the deep.-P.214]

The good little man was equally nonplussed when he looked at the water, for he saw the most wonderful medusæ, some so large that they looked like little islands floating about among Brobdignagian sea-weeds. And below the surface, what a spectacle met the eye! Myriads of fish of every species; young manati at play with each other; narwhals with their one strong weapon of defence, like the horn of a unicorn, chasing the timid seals; whales of every tribe, spouting out columns of water and mucilage, and filling the air with a peculiar whizzing noise; dolphins, seals, and walruses; sea-dogs and sea-horses, sea-bears and sea-elephants, quietly browsing on submarine pastures; and the Doctor could gaze at them all as easily and clearly as if they were in glass tanks in the Zoological Gardens.

There was a strange supernatural purity about the atmosphere. It seemed charged to overflowing with oxygen, and had a marvellous power of exhilaration, producing an almost intoxicating effect on the brain.

Towards evening, Hatteras and his companions lost sight of the coast. Night came on, though the sun remained just above the horizon; but it had the same influence on animated nature as in temperate zones. Birds, fish, and all the cetacea disappeared and perfect silence prevailed.

Since the departure from Altamont Harbour, the sloop had made one degree further north. The next day brought no signs of land; there was not even a speck on the horizon. The wind was still favourable, and the sea pretty calm. The birds and fishes returned as numerously as on the preceding day, and the Doctor leaning over the side of the vessel, could see the whales and the dolphins, and all the rest of the monsters of the deep, gradually coming up from the clear depths below. On the surface, far as the eye could reach, nothing was visible except a solitary iceberg here and there, and a few scattered floes.

Indeed, but little ice was met with anywhere. The sloop was ten degrees above the point of greatest cold, and consequently in the same temperature as Baffin's Bay and Disko. It was therefore not astonishing that the sea should be open in these summer months.

This is a fact of great practical value, for if ever the whalers can penetrate north as far as the Polar basin, they may be sure of an immediate cargo, as this part of the ocean seems the general reservoir of whales and seals, and every marine species.

The day wore on, but still nothing appeared on the horizon. Hatteras never left the prow of the ship, but stood, glass in hand, eagerly gazing into the distance with anxious, questioning eyes, and seeking to discover, in the colour of the water, the shape of the waves, and the breath of the wind, indications of approaching land.

CHAPTER XXII.

GETTING NEAR THE POLE.

Hour after hour passed away, and still Hatteras persevered in his weary watch, though his hopes appeared doomed to disappointment.