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those intensely hot days in July, 1868, when in the cool of the 
evening, after a temperature of near 90° at 3 p.m. with a bright 
cloudless sky, a drive was taken in an open fly from Darlington 
Place, up Bathwick Hill: every advance we made seemed to bring 
us into a purer and more invigorating air, till when at the top, 
with woods on either side, a refreshing odour of a most peculiar 
character was perceived, no doubt arising from the presence of 
ozone in large quantity. But the most striking difference was 
that experienced on our return into the town, after taking the 
round by Brass-Knocker, and Coombe Down. No sooner had we 
crossed the Old Bridge, and entered the streets by the river side, 
than an odour, as opposite to the one on the high lands as can well 
be imagined, immediately struck the olfactory organs, of which I 
dare say the inhabitants of those streets were quite unconscious at 
the time, but which to us from the strong contrast, seemed 
perfectly offensive. There was no feeling of the air being cooler 
“at the top of the hill, except in the neighbourhood of trees, than 
it had been in Darlington Place at first starting ; it was a change 
in the quality of the air itself that was so remarkable. 
Further observations on this part of the meteorology of Bath 
by practical chemists would be of great value. It would be 
especially desirable to test the quality of the air in different 
quarters of the town, and at different periods of the year. 
According to Dr. Andrews there is conflicting evidence as to the 
particular seasons in which ozone is most abundant in the air. 
Some observers say that “the amount is greater in winter than in 
summer, in spring than in autumn ; while according to others, it 
is greater in spring and summer than in autumn and winter.” 
There seems to be equal uncertainty as to whether it is greater 
in the day than in the night, or the reverse. 
As there is a “season” in Bath, and times of the year when the 
place is more resorted to than others, by invalids especially, these 
questions are not without a local interest. It is much to be 
desired also, in reference to the whole subject of the climate of 
