LAND AND WATER ON THE SURFACE OF THE GLOBE. 

 NORTH POLAR CIRCLE. 



297 



From these numbers we have the following conclusions : — 



Land. Water. 



For the north polar circle 18.0263... 23.4437 or a ratio of 100 to 13y 



the north temperate zone 126.6308. ..132.5247 100 to 105 



the north half of the torrid zone 52.5582. ..146.8162 100 to 279 



the south half of the torrid zone 46.1592. ..153.2156 100 to 332 



the south temperate zone 22.5488. ..236.6o60 100 to 1049 



the south polar circle 41.4700 



the whole sphere 265.9233. ..734.0762 100 to 27() 



the northern hemisphere 197-2153. ..302.7846 100 to 154 



the southern hemisphere 68.7080...431.2gi6 100 to 628 



the whole torrid zone 98.7171... 300.0318 100 to 304. 



It has been mentioned that Dr Long, omitting the polar circles, 

 found the ratio of land to water as 124 to 349, or 100 to 281; in 

 the present case it comes out, under the same circumstances, as 100 

 to 270. This is not a greater difference than might be expected from 

 the advance in geographical knowledge since the time of Senex ; 

 and it seems to relieve Dr Long from any suspicion of having neg- 

 lected to take proper precautions in trying the experiment ; but it 

 must be acknowledged that the numbers just stated differ much from 

 those which M. Malte Brun* has assigned to the same portions of 



* Geography (Eng. Trans. Edinb. 1822) Vol. i. p. 159. His words are, "We have found, 

 by a pretty exact computation, that the land m each hemisphere and the zone bears to the 

 whole the following proportions: 



"In 



