Page:McClure's Magazine volume 10.djvu/115

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DR. FRIDTJOF NANSEN.
301

consequently lighter water which results from the constant outflow of fresh water from the Siberian and American rivers into the Polar basin. Being heavier on account of its salinity, the warm Atlantic water must sink under this cold but lighter layer on top, and will fill the whole depth of the Polar basin. What is the result of this? The fresher water on top prevents the warm water from approaching the surface, and consequently the formation of ice by freezing is not very much retarded by the heat which this warmer water carries into the Polar sea. It is, however, evident that, notwithstanding the protection afforded by this cold top-layer, this constant


NAVY CLIFF (81° 37′), WHERE LIEUTENANT PEARY ERECTED A CAIRN AND PLANTED THE AMERICAN FLAG ON JULY 4, 1892. LIEUTENANT PEARY'S NORTHERNMOST POINT (82° 12′) IS ON THE ICE CAP IN THE BACKGROUND OF THE PICTURE.

This photograph is reproduced by the courtesy of Lieutenant Peary and his publishers, the Frederick A. Stokes Company, from a forthcoming book.

AN EFFECT OF SUNSET AND SUNRISE. FROM THE COLOR STUDY PAINTED FROM NATURE IN BAFFIN'S BAY, SEPTEMBER 23, 1896, BY A. OPERTI, THE ARTIST OF THE PEARY EXPEDITION, DURING THE HALF HOUR DISAPPEARANCE OF THE SUN, WHEN THE SUNSET LIGHT LINGERED IN THE SKY WHILE THE SUNRISE RADIANCE BEGAN TO BE FELT.