A Hand-Book of Climatic Treatment, Including Balneology

to place the therapeutics of climate on a secure foundation, and he founds his classification of climates on "the demand made by the climate for the production of heat. This corresponds with the demand for tissue change. Now the tonic or relaxing character of a climate turns chiefly on the ability of the organism to adapt itself to the requirements. Other things being equal, that climate is most tonic which demands the greatest amount of tissue change that a given organism can permanently yield." This quotation gives the keynote of the book, for temperature is the only meteorological factor that retains its place as an element of classification for all climates. Davos and the