Medical climatology; or, A topographical and meteorological description of the localities resorted to in winter and summer by invalids of various classes, both at home and abroad . ofthe numerous countries and localities subsequently treatedof, I have endeavoured to give a concise and impartialaccount of each place, as deducible from the works of manyauthors, from amongst whom I have, as far as possible,selected the most trustworthy. Where I have been ableto adduce personal knowledge of a climate, I have done PKEFACE. XI so only after careful deliberation and comparison with theopinions of oth
Medical climatology; or, A topographical and meteorological description of the localities resorted to in winter and summer by invalids of various classes, both at home and abroad . ofthe numerous countries and localities subsequently treatedof, I have endeavoured to give a concise and impartialaccount of each place, as deducible from the works of manyauthors, from amongst whom I have, as far as possible,selected the most trustworthy. Where I have been ableto adduce personal knowledge of a climate, I have done PKEFACE. XI so only after careful deliberation and comparison with theopinions of others. In making rise of the works of Climatologists I havedesired as much as possible to acknowledge my obligationsto the various authors, and have done so in full whereverit was practicable. But in a work of this kind it wouldhave added but little to its utility, though much to its size,to have encumbered it with frequent foot-notes. And hereI beg to offer my acknowledgments to all from whom, in along course of reading, I have derived information. The Map which accompanies the Book has beenkindly adapted to it by Mr Keith Johnston. 18 Queen Steeet, Edinburgh,November MEDICAL CLIMATOLOGY. CHAPTER I. A SKETCH OF THE CAUSES OF PHYSICAL CLIMATE. Climate (nhi^a, xXweiv, to incline). Mathematical Defini-tion.—If the earth, in its relations with the solar system,had been placed in snch a position that the axis of its dailyrotation had been perpendicular to the plane of its orbit ofannual circulation, climate would have been a subject veryreadily disposed of. The globe, however, makes its annualjourney round the sun at an inclination of 23° 30 to theplane of its orbit, and by this marvellous arrangement bringsregions which would never otherwise have known the sun,within the scope of his gladdening rays, gives to us thecheerful succession of the seasons, and causes that inequalitywhich we experience in the length of the day and a knowledge of the latter circumstance
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