180 DR. C. CHREE: AN ENQUIRY INTO THE NATURE OF THE RELATIONSHIP 



and V from a number of days which are not days of large disturbance ; but if this were 

 the true explanation, we should expect the position of 1893 at Batavia and Pawlowsk 

 to diifer more in the case of H than in that of D, which is the reverse of what 

 happens. 



34. Table XXII. gives values of a, b and b/a calculated for the data in 

 Table XXI. The value of b/a answering to the " aggregate value" is in each case 

 greater than that answering to the " number" ; and, except in the case of V, both 

 values of b/a are considerably higher than the corresponding yearly values in 

 Tables XVIII. and XIX. 



If we compare Table XXII. with Table XIV. for Katharinenburg, we see that in V 

 the Batavia disturbance values of b/a are much less than the lowest value of b/a at 

 Katharinenburg, viz., that for the diurnal inequality. In H the Batavia disturbance 

 values of b/a are similar to the value of b/a in the absolutely monthly range at 

 Katharinenburg. In D, however, the Batavia disturbance values of b/a are much in 

 excess of any corresponding value at Katharinenburg. 



The way in which disturbance influences the records at the two places are thus 

 widely different. 



TABLE XXII. Batavia " Disturbances," 1887-98 (Units for " Values" 1' for D, 



ly for H and V). 



35. Table XXIII. compares observed and calculated values in the mean diurnal 

 inequality for the year at Batavia, and in the aggregate value of the disturbances. 

 The values employed for a and b in the case of the ranges are those calculated by 

 least squares. 



The nicety of agreement in the case of the ranges is very similar to what has been 

 already observed at Kew, Pawlowsk and Katharinenburg; and, as at Kew, the 

 agreement is practically the same for the 24 differences as for the ranges. As has 

 been generally observed elsewhere, the agreement is least good in the case of V. 



In the case of the aggregate value of the disturbances, the agreement is pretty 

 similar to what was found for the mean of the absolute monthly ranges at 

 Katharinenburg; and, as elsewhere, the failure of the formula to account satis- 



