CS  —”—“‘i—sS 
225 
Now it will be seen that both in spring and summer the extreme 
night and day temperatures recede from each other less in Bath 
than they do in any of the other towns ;—this being especially 
the case in summer, the distance to which they then recede being 
remarkably less, compared with Greenwich and Royston in 
particular. In other words, the mean of all the highest does not 
rise so high, nor the mean of all the lowest fall so low, in Bath in 
these seasons as in the other towns, the difference in the case of 
Royston amounting in summer to more than five and half degrees. 
It is this more contracted mean diurnal range of temperature 
which is the chief characteristic of the Bath climate in summer, 
rendering the days not so hot and the nights not so cold as in 
other places lying more to the east. 
In autumn this difference in the mean diurnal range at Bath 
compared with the other towns is muclr less apparent, and in 
winter it almost entirely disappears. What is it then that gives 
the Bath climate an advantage in winter*—We have already 
shown that it has a higher mean temperature at that season, but 
in addition to this it will be seen that—just contrary to what 
takes place in summer—the mean of all the highest rises higher, 
and the mean of all the lowest does not fall so low, as in other 
places :—the mean daily range remains the same, or very nearly 
the same, from the circumstance of the mean extreme tempera- 
tures, though both falling absolutely lower than in Bath,—yet 
falling relatively to the same extent, so as to preserve the same 
difference (about ten degrees) in all the towns, by which 
difference the mean daily range is measured. 
In the above remarks on Table VII, I have taken little or no 
account of Norwich, except as regards the winter season results. 
The Norwich results relating to the other seasons appear unsatis- 
factory, in consequence, I imagine, of the returns from that place 
being incomplete for spring, summer and autumn, as already 
alluded to.* 
© See p. 222, (Note). 
