376 



KEPORT — 1892. 



fig. 2, and the relative distances of each made more obvious upon inspec- 

 tion by the line of direction being separate and distinct. A still cleaver 

 result is obtained by adding a constant length to each distance, which is 



Fig. 2. 



oc 



B 



Q 



OD 



o 

 ' E. 



equivalent to taking the fixed point farther av^ay, and measuring the 

 distances along radii from an arc dravFn with a fixed distance as centre 



as in fig. 3. 



A 



o 



B 



Q 



Fig. 3. 



9d 



.^E 



When a fixed point is taken infinitely distant, the arc becomes a 

 straight line, and the distance measured perpendicular to it and parallel 

 to each other, as in fig. 4. 



This is the most common and convenient way of popularising 

 statistics graphically, and enables various numerical quantities to be 

 compared. 



