TheTrade is not only stronger
squarThe isobars are still closest in the northwestern corner of the square, where the prevailing northeasterly wind is strongest. but more easterly on the western than on the eastern side of the squar Fromto, betweenand, the prevailing wind is nearly due north, whilst betweenand it is aboutTheTrade has gainedto the southward since January, and now extends toTheTrade has retreatedto the southward before the , and decreased in force since January. It is strongest on the western side of the squarIsotherms of Air and Sea.The similar trend in the isotherms of both air and sea seems worthy of notice, as, also, the fact that the sea remains aboutwarmer than the air.The air isotherm ofbeing the coldest air in square , due to theTrade, shows in the northern part of the square this month.The temperature of both air and sea has decreased in the northern and increased in the southern half of the squar Betweenand, the air has decreased , the sea , whilst, betweenand, the air has increased , and the seaThere has been no change in the mean temperature of the air betweenand, and none in that of the sea betweenand In spite of these great internal changes, the mean temperature of the whole square lias not changed since January, but the difference in the position and trend of the various isotherms for the two months, shows the importance of this minute work.Current ArrowWesterly currents prevail in the square, the strongest being between the Equator and, where the E, Trade prevailEasterly currents still show, on the eastern side of the square, betweenand, they are where the prevailing wind is Northerly. Betweenand, Southeasterly currents prevail over all otherWinThe remarks on wind show that there were some smart squalls in February, and that the wind is more unsettled on the eastern than on the western side of the squarCurrentThere is only one mention of current rips between the Equator and, whilst they abound in other parts of the squarCloudThe remarks on clouds are similar to those for January.Weather.The remarks on the direction in which lightning is seen show that its source is where the two Trades meet Betweenand no lightning was seeNatural History.