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Show [ 126 ] Parts with chill fireatn the dim religious bower, Titne-mouldered bafiion, and difmantled tower ; By alter' d fanes and namelefs villas glides, I 2 5 And claffic domes, that tremble on his fides ; Sighs o'er each broken urn, and yawning tomb, And tnourns the fall of LrBER TY and RoME. IV. "Sailing in air, when dark MoNsooN inihrouds I-I is tropic mountains in a night of clouds ; 1 3 o Or drawn by whirlwinds from the Line returns, And fi1owers o'er Afric all his thoufand urns ; Dark monfoon injhrouds. 1. I~9· When from any peculiar fituations of land in refpeCl to fea the tropic becomes more heated, when the fun is vertical over it, than the line, the periodical winds called monfoons are produced, and thefe are attendee by rainy feafons; for as the air at the tropic is now more heated than at the line it afcends by decreafe. of its fpecific gravity, and floods of air ruili in both from the South Well: and North Eafi, and thefe being one warmer than the other the rain is precipitated by their mixture as obferved by Dr. Hutton. See additional notes, No. XXV. All late travellers have afcribed the rife of the Nile to the monfoons which delvge Nubia and Abyfiinia with rain. The whirling of the afcending air was even feen by Mr. Bruce in Abyfiinia; he fays, " every morning a fmall cloud began to whirl round, and prefently after the " whole heavens became covered with clouds," by this vortex of afcending air theN. E. winds and the S. W. winds, which flow in to fupply the place of the afcending column, became mixed more rapidly and depofited tht:ir rain in greater abundance. Mr. Volney obferves that the time of the rifing of the Nile commences about the 19th of June, and that Abyfiinia a,nd the adjacent parts of Africa are deluged with rain |