1 66 



Dr. Schuster on 



III. Means. 



68 per cent, of the means are higher at Oldham Road 

 than at Whitworth Park, the daily averages being 36'4 and 

 3 5 '5 respectively. 



IV. p a.m. Readings. 



Generally speaking, the readings at Whitworth Park are 

 lower than at Oldham Road, the daily averages being 34*2 

 and 357 respectively. 



Percentage of lower readings observed 88* 



„ equal „ „ 2- 



„ lower „ calculated 89* 



Mean Daily Range. 



The mean daily range is less at Oldham Road than at 

 Whitworth Park, the values being respectively 7°7 and 1 1°"9. 



Taking the series of readings as a whole the greatest 

 divergence occurs on January 5th, the figures for the day 

 beinsT : — 



Note on the previous paper. By Arthur Schuster, 

 Ph.D., F.R.S., F.R A.S. 



Mr. Wilson, a few weeks ago, drew my attention to a 

 curious difference in the record of the minimum temperature 

 as observed in the City Observatory, Oldham Road, and the 

 Owens College Observatory, Whitworth Park. I asked him to 

 write a short account of his observations, because it seemed 

 to me that, although the time over which the observations 



