Tlie Motion and Distribution of tiie Sun-spots 45 



ordinate increases with increasing abscissa for all the lines, I consider it reasonable 

 to draw the conclusion that a greater angular velocity, corresponding to a shorter 

 rotation-period, is obtained from greater than from smaller spots, a result which 

 in some degree may seem to be opposed to that of the Maunders: »Spots of short 

 duration tend to give a shorter rotation period than spots of long». 



To conclude from the expressions for V that within each zone there should 

 exist a linear relation between the angular velocity and log A is naturally unjustified. 

 These formulae njust only be regarded as rough approximations. 



