As discovered by Commander Maury, the true source of the Gulf Stream, its starting point, if you prefer, is located in the Bay of Biscay. There its waters, still weak in temperature and color, begin to form. It goes downsouth, skirts equatorial Africa, warms its waves in the rays of the Torrid Zone, crosses the Atlantic, reachesCape Sao Roque on the coast of Brazil, and forks into two branches, one going to the Caribbean Sea for furthersaturation with heat particles. Then, entrusted with restoring the balance between hot and cold temperatures and with mixing tropical and northern waters, the Gulf Stream begins to play its stabilizing role. Attaining a white heat in the Gulf of Mexico, it heads north up the American coast, advances as far as Newfoundland, swerves away under the thrust of a cold current from the Davis Strait, and resumes its ocean course by going along a great circle of the earth on a rhumb line; it then divides into two arms near the 43rd parallel; one, helpedby the northeast trade winds, returns to the Bay of Biscay and the Azores; the other washes the shores of Ireland and Norway with lukewarm water, goes beyond Spitzbergen, where its temperature falls to 4 degrees centigrade, and fashions the open sea at the pole.