The temperature of the counter-trade partakes, doubtless, of the temperature of the adjoining strata at its upper and lower portion, and has never been found much, if any, higher than 60 deg. at the center. Nor could it be expected. The trade, in its upward curving course, within the tropics, attains a considerable altitude where the atmosphere is comparatively cold, and necessarily loses a portion of its heat there, and during its northern flow. Probably its central summer range, in the latitude of Paris, is not far from 55 deg., and with us 60 deg.. The contrast between the trade and the surrounding atmosphere, in winter, is much more striking, and this has been observed particularly upon the Brocken of the Alps, and in the polar regions. "In all seasons the temperature is higher on the Brocken, on a serene, than on a cloudy day, and, in the month of January, _the serene days were warmer than at Berlin_." (Kaemtz's Meteorology, by Walker, p. 217.--Note.) As the portion of the counter-trade, which does not become depolarized--in diminished volume--progresses toward the polar regions, it settles nearer the earth, and within the Arctic circle is found but little way above it. Thus, in December, 1821, Parry, at Winter Island, in latitude 66 deg. 11', flew a kite, with a thermometer attached, to the height of 379 feet, and found that the temperature, instead of falling 1-1/4 deg., the usual ratio of decrease, rose 3/4 of a degree. The same thing was observed at Spitzbergen, in latitude 77 deg. 30' north, and at Bosekop, latitude 69 deg. 58', by a scientific commission, and by means of kites, confined balloons, and the ascent of elevations.