HEFFERA1V. [VOL. II. 



A. Calculated by Duncker's method, = 3.68%. 



V-M f y 5i 5z 



- 4.1114 i o- 1 + - 8 7 

 -3.1114 2 1.2 +0.8 

 -2. 1 1 14 8 7-9 + - 1 



- 1. 1 1 14 27 35-3 - 8 -3 - 0-09 



- 0.1114 102 90.5 + 1.5 - 4-82 

 + 0.8886 114 122.9 - 8.9 - 5.01 

 + 1.8886 89 89.9 -0.98 



+ 2.8886 46 35-5 + 7-43 - 0.85 



+ 3.8886 10 10.8 -0.89 -0.79 



+ 4.8886 i 2.3 - 1.36 



400 399-7 4 I -5 11.56 



TYPE I. 



n = 399 = SOS-S 6 b == 46.165 



at = 21.663 1111=142.426 ff - 1.316 



32 = 24.502 m 2 = 161.134 d= 0.00929 



y = 120.68 (calculated from approximate formula). M - d = 10.066 



399 39 8 -5 41.60 12.98 



Since it is considered a sufficient agreement between obser- 

 vation and calculation when A < = %, which in this case is 



v 



5 '/ , it is evident that these values show a moderate degree of 

 closeness of fit of the two curves. The difference between the 

 two values of A, o.io, is so small that we may conclude that it is 

 practically immaterial under which type this curve should fall. 



