XXVIII.—On the Number of Dust Particles in the Atmosphere of Certain Places in Great Britain and on the Continent, with Remarks on the Relation between the Amount of Dust and Meteorological Phenomena

Abstract

In the two papers previously communicated to this Society under the above title, Parts I. and II., I have given the results of my observations on the dust in the atmosphere for the years 1889 and 1890. In this paper will be given the results of similar observations I have been able to make during the years 1891, 1892 and 1893. The observations made during these last three years are similar to those made in the two previous ones; and were mostly made at the same places and at about the same dates as those already given. These five sets of observations are therefore comparable with each other, and give a fair statement of the number of dust particles in the atmosphere at the different places at the particular dates.