THE APPARENT MOVEMENTS OF THE SUN 



seasons of the year has been made to illustrate the differences. 

 The differences would, of course, be more striking if London and 

 Aberdeen had been chosen, and less striking if London and a 

 midland town had been selected. 



LENGTH OF DAY AT EDINBURGH AND LONDON AT THE EQUINOXES AND THE SOLSTICES. 



Figures for Edinburgh taken from Edinburgh Postal Directory, 1 908-9 ; for London 

 from Whitaker's Almanack, 1908. 



Let us note some of the interesting points which may be brought 

 out by this simple little comparison. In March the time between 

 sunrise and sunset, i.e. the length of the day, is, in general terms, 

 the same for Edinburgh and London. We might select one or two 

 other towns to show that this is true everywhere. 



To put the matter in another way : suppose a man is motoring 

 all night in any part of Britain at the end of March or at the end of 

 September, he would have to burn his lamps for the same number 

 of hours everywhere. But, as the figures show us, in Edinburgh he 

 would not need to light them till about twelve minutes later in the 

 VOL. vi. 5 



