The Trade Winds

The carth turns on its axis from J x) east, and with it rotatcs daily tlieijj rnons envelope of the atmospherc, K velocity of rotation at the eqnalm .1 Boinething over one thousaud miV hour; at thirty degrees distancej.i about 150 miles less. In liigher lat.-. J it is still less, and at the polos noil Therefore, whenever the air move6sTj or soutli on tlie surf ace of the eat'! will carry with it less or greater Tefes of -the rotation tlian the ilace itful over, and will turn into an eastahJ westerly wind, according as it apptci-, or recedes from the equator. t-.É región of the suu's greatest heatB rnrefiod and lightened. is conti: ing, nnd eooler currents come in oí'I sides to take the place of the nscaól volume. As these side currtnts t; from a distauce of about thirty .1 irora the equator, they have, at stinl an onstward velocity many mili less tlian the localities they wil ally reach. Consequently they itillt pear to lag behind in all tin1 their progress to the equator tliey will have a westerly motion nnjl with their north and south iiiotpiüi I These are the great tradewinda, constantly from the northeasi side, and the southeast on the otlfifcl of the equator.