CONCERNING WEATHER SIGNS 



Introductory : general principles. 



I. THE signs of rain wind storm and fair weather 

 we have described so far as was attainable, partly 

 from our own observation; partly from the informa- 

 tion of persons of credit. 



Now those signs which belong to the setting or 

 rising of the heavenly bodies must be learnt from 

 astronomy. 1 Their settings are twofold, since they 

 may be said to have set when they become invisible. 

 And this occurs when the star sets along with the 

 sun, and also when it sets at sunrise. In like 

 manner their risings are twofold : there is the 

 morning rising, when the star rises before the sun, 

 and there is the rising at nightfall, when it rises at 

 sunset. 



Now what are called the risings of Arcturus occur 

 at both times, his winter rising being at nightfall 

 and his autumn rising at dawn. But the rising of 

 most of the familiar constellations is at dawn, for 

 instance, the Pleiad Orion and the Dog. 



Of the remaining signs some belong specially to 

 all such lands as contain high mountains and valleys, 

 specially where such mountains extend down to the 

 sea : for, when the winds begin to blow, the clouds 

 are thrown against such places, and, when the winds 



1 Or, perhaps, ' from my astronomical works.' 



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