[ 75 ] 



as 2247 ^^^ meafured area of the quadrilateral. 

 : 121 5 the meafured area of B. 

 :: 2387 the true area of the quadrilateral. 

 : 1237 ^^^ ^^^^ area 'of B. 



When the true extent of the portions into which the contour 

 line divides the quadrilaterals is thus adjufted, the addition of 

 the feveral numbers in the fraElional area to the integral will 

 give the contents of the map : and to prevent any confufion in 

 the numbers to be added, it will be advifeable to ftain the fraBional 

 area one uniform colour, and to add the number^'in the different 

 zones in feparate columns. 



By the above rules I meafured the annexed map of Germany, 

 including the Auftrian Netherlands, taken from Mr. D'Anville : 

 The following table fhews the refult and its relative proportion 

 to the areas of different authors. 



Mr. D'Anville's map taken from his T 



firfl part of Europe, 1754 - 192552 I § 



Templeman's Survey of the Globe - 156950 — 35602 — 1 *? 



Bufching, 1780 - - 177984— 14568 — 



(Statiftiche Ueberficht) in German, 



1786 - - - 192000 — 552 — 



Crome on the Size and Population of 



Europe, 1785 - - - 204736—13184+ ^ 



Vol. VI. K 2 If 



2. <» 



>! 



