10 OSCILLATIONS AND CONFLICTS OP 



cause the diurnal rising and falling, we are not at 

 present concerned. 



168. When the sun is on the equator, then the 

 culminating points, both of the solar and of the 

 counter- solar tide, are also at the equator. But as 

 the sun diverges from the equator, either northwards 

 or southwards, the culminating point of the solar tide 

 diverges with it, whilst the culminating point of the 

 counter-solar tide diverges equally in the opposite 

 direction. And thus there is caused an oscillation of 

 water twice a year from the equator towards the 

 poles, and back twice a year from the poles towards 

 the equator. So that the highest point of this oscil- 

 lation is at the equator during each of the equinoxes, 

 and at its lowest at the equator during each of the 

 solstices, being, therefore, beyond the tropics at its 

 lowest point during each of the equinoxes, and at its 

 highest point during each of the solstices. 



That is, after each equinox the solar tides com- 

 mence to diverge from the equator, and culminate, 

 the solar tide in the one hemisphere and the counter- 

 solar tide in the other hemisphere, at each of the sol- 

 tices. And then, after each of the solstices, they 

 commence to converge towards the equator: the 

 one flowing towards the equator from the tropic 

 of Cancer, and the other from the tropic of Capricorn. 



169. And therefore, from the March equinox to 

 the June solstice, the solar tide acts in conjunction 

 with the flow of the annual tide, in the northern 



