380 THE PHYSICAL GEOGRAPHY OF THE SEA. 



the land-wind extends. Here, upon the limits of the permanent 

 monsoon, the place for the calms remains for the night, to be 

 turned back to the land and to the hills the following day by the 

 sea- wind. In every place where these calms go, the land and sea 

 winds turn back. If various observers, placed between the hills 

 and the sea, and between the coast and the farthest limit of the 

 land-wind, noted the moment when they perceived the calms, and 

 that when they perceived the land-wind, then by this means they 

 would learn how broad the belt of calms has been, and with what 

 rapidity they are pushed over the sea and over the land. And 

 even though the results one day should be found not to agree very 

 well with those of another, they would at least obtain an average 

 thereof which would be of value. So, on a larger scale, the belt 

 of calms which separates the monsoons from each other presses 

 in the spring from the south to the north, and in the fall from the 

 north to the south, and changes the monsoons in every place 

 where it presses."* 



* Bijdrage NatuurkundigeBeschrijvingder zeen, vertaald door M. H. Jansen, Lui- 

 tenant ter zee. 



