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PREFACE TO THE SECOND EDITION.
The object which the author of this treatise has kept steadily in view has been to set the subject of Meteorology before the general mind in such a way as shall engage on its behalf a widespread interest, to which, from its intimate connection with our welfare and happiness, it is in every way entitled. Frequent occasion is taken to point out the bearings of the science on the practical affairs of life. The information is brought down to the present time, thus rendering it a handy book of reference on subjects connected with weather and climate.
The Isothermal Charts for July, January, and the year, Plates IV., V., and VI., have been adapted from Dove's Monthly and Yearly Isothermals, 1864, and the same author's Charts given in The Distribution of Heat over the Surface of the Globe, 1853.'
The Isobarometric Charts for July, January, and the year, Plates I., II., and III., are new. They formed the subject of a paper read before the Royal Society of Edinburgh on the 16th March 1868. The mode of their construction is described in the text. Though the first attempts at the construction of such charts, they may be regarded as close approximations to the statement