Page:Transactions of the Provincial Medical and Surgical Association, volume 4.djvu/215

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At this season, the mean dew-point, at Malvern, of south-west winds, is 15½° higher than the mean dew-point of north-east ones. At London, the mean dew-point of south-west winds is 14½° higher than the mean dew-point of north-east.

The mean temperature of north-east winds, in London, is only half a degree warmer than the mean temperature of these winds at Malvern. The mean temperature of south-west winds is nearly the same in both places. North-east winds are a little dryer, and south-east winds rather more damp, at Malvern than in London.

If we limit our division of the winds to two currents, calling that coming from the south of east and west, the vapour current; and that from the north of these two points, the dry; the following are the results at London and Malvern, for the several months and seasons: