50 



however, on taking each week of the month separately, and 

 comparing the two places, the mean temperature was not 

 always less at Bath : some weeks it was greater. 



In the week commencing June 28th, and ending July 4th, 

 the mean temperature of Bath was r.8 higher than at 

 Greenwich. 



In the second week, ending July 11th, it was again higher 

 by r.o. 



In the third week, ending July 18th, it was no less than 

 4°. 3 lower than at Greenwich. This was the week of highest 

 mean temperature during the whole season, and at Greenwich 

 was *Hf.*J, being said to be 8°.5 above the average. 



In the 4th week, ending July 25th, the mean temperature 

 at Bath was almost identical with that of Greenwich, the 

 difference being only 0''.2. 



In the fifth week, ending August 1st, the two were almost 

 again the same, there being just the same difference of 0°.2, 

 the small excess being in each case with Bath. 



This leads me to think that it is not in respect of the tnean 

 temperature, which is seen thus to fluctuate when compared 

 with that of Greenwich, that Bath is materially different from 

 other places in very hot weather. 



What the true mean temperature of each season and each 

 month of the year is at Bath, must wait to be determined till 

 observations shall have been made for a longer term of years 

 than they yet reach over. But going upon the data we possess, 

 it may be of interest to compare the mean spring and summer 

 temperatures at Bath and Greenwich, as also the mean of the 

 highest in each of those seasons, in order to see how far the 

 results confirm or negative the above inference. I accordingly 

 give these results in the following Table, just premising that 

 spring includes the three months of March, April, and May ; 

 summer, those of June, July, and August. The observations 

 in the Institution Gardens did not commence till March, 1865, 



