76 REPOET— 1886. 



2. We have next obtained a table B, where eacb day's value is the 



average of 25 days of table A, all being properly placed •with 

 respect of dates. 



3. Taking the difference between the entries of tables A and B, we 



obtain a series representing departures from the mean — ^lus 

 when in excess, and minus when in deficiency — whicb may be 

 taken to represent wind weather. 



4. The declination aggregate daily disturbance numbers have been 



treated in exactly the same way as the wind numbers, and the 

 differences obtained may be taken to represent dishirbance 

 weather. 



5. The values representing wind weather have then been formed 



into series of twelve terms each, so chosen that maximnm wind 

 values come together at the middle of each series. The series 

 are then added up. The result is given in (a). 



6. The declination disturbance weather values have then been 



arranged into series of twelve each, so that each entry is two 

 days previous in date to the corresponding entry in (a). Call 

 this (/3) when added up. 



7. The values representing wind weather have next been formed 



into series of twelve terms each, so chosen that minimum wind 

 values come together at the middle of each series. Let this be 

 added up and called (y). 



8. The declination disturbance weather values have then been 



arranged into series of twelve each, so that each entry is two 

 days previous in date to the corresponding entry in (y). This 

 is added up and called (o). 

 The results of these tables are given below : — 



(a) Wind weather arranged so that max. values represent middle 

 of series. 



-2384-1655-101 + 220.5 + 5935 + 7431 + 7022 

 + 4157 + 2401-360-1667-2196. 

 (/J) Dec. disturbance values so arranged that each entry of (/3) is 

 two days previous to each entry of (o). 



-2220-652 + 245 + 1110 + 919 + 693 + 1007 + 466 

 + 1067 + 588 + 33-186. 



(y) Wind values arranged so that min. values represent middle of 

 series. 



+ 2535 + 1114-1017-3393-4872-5312-5177 

 -4740-3322-1680 + 1074 + 3196. 



(2) Dec. disturbance values so arranged that each entry of (2) is 

 two days previous to each entry of (y). 



+ 679 + 177-474-1022-1227-587-260-367 

 -1041-980-535 + 116. 



From this it would appear that high disturbance values correspond 

 with and slightly precede high wind values. It is our intention to reduce 

 all the available Kew observations in this way, and ultimately to present 

 the result to the Royal Society. 



