160 



THE TRADE WINDS. 



The regularity of these seasons is broken by a 

 variety of local causes, and there is ever, I re- 

 peat, the normal instability of equinoctial cli- 

 mates. Theory appears often at fault upon these 

 matters. A fair instance is Mr Cooley's assertion, 

 that about Kilima-njaro the 6 rainy season is also 

 the hot season/ Theoretically, of course, the 

 period of the sun's northing and of the great 

 rains should be, north of the equator, the hot 

 season ; but where tropical downfalls are heavy, 

 the excessive humidity intercepting the solar 

 rays, and the valleys and swamps refrigerated by 

 the torrents, make the rainy season the cold 

 weather. From June to September the natives 

 of Fernando Po (N. lat. 4°) die, like those of 

 eastern intertropical Africa, of catarrh, quinsey, 

 and rheumatism. Even in India the Goanese call 

 the rains e o inverno,' and Abba Gregorius makes 

 the wet weather the winter of Abyssinia. About 

 Kilima-njaro the hot and dry season opens with 

 the end and closes with the beginning of the hot 

 monsoon. 



The natives of Zanzibar distribute the year 



due east wind). The N.E. is still commonly called ' Barrani '; 

 in vulgar Arabic, however, men would say, Bayn el Shimal 

 w'el Gharb. At Zanzibar the east wind is called by the Was- 

 hawahili Za ju — of above, and the west Pliepo Mande or Um- 

 unde — of dew or mist. 



