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Updated: June 16, 2025
"On account of the size of these continents and oceans," said Bearwarden, "it is easy to believe that many climatic conditions may prevail here that can scarcely exist on earth. But what a magnificent world to develop, with its great rivers, lakes, and mountains showing at even this distance, and what natural resources must be lying there dormant, awaiting our call!
It mattered not where Miss Fewne spent her time: whether she enjoyed the season in New York or Washington, Baltimore or Boston, she found that climatic surroundings did not in the least change the conduct of men toward her. In what her attractions especially consisted, her critics and admirers were not all agreed.
Except in a region where climatic conditions are exceptional, what makes men labour is not an employing class, but nature. Directive ability does not make them labour; it finds them labouring. It finds them like wheels which are driven by an eternal stream, and which must turn and turn for ever, until they fall to pieces.
The preferred forms, which give a larger harvest, are generally more sensitive to injurious influences, more dependent on rich manure and on adequate treatment. The native varieties have therefore the advantage, when climatic or cultural conditions are unfavorable for the fields at large.
The bounty of nature, and the ease with which climatic conditions, aided by the unwarlike character of most of the natives, adapted themselves to the institution of slavery, insured the cheap and abundant production of articles which, when once enjoyed, men found indispensable, as they already had the silks and spices of the East.
The habitable earth originally wooded General meteorological influence of the forest Electrical action of trees Chemical influence of woods Trees as protection against malaria Trees as shelter to ground to the leeward Influence of the forest as inorganic on temperature Thermometrical action of trees as organic Total influence of the forest on temperature Influence of forests as inorganic on humidity of air and earth Influence as organic Balance of conflicting influences Influence of woods on precipitation Total climatic action of the forest Influence of the forest on humidity of soil The forest in winter Summer rain, importance of Influence of the forest on the flow of springs Influence of the forest on inundations and torrents Destructive action of torrents Floods of the Ardeche Excavation by torrents Extinction of torrents Crushing force of torrents Transporting power of water The Po and its deposits Mountain slides Forest as protection against avalanches Minor uses of the forest Small forest plants and vitality of seeds Locusts do not breed in forests General functions of forest General consequences of destruction of Due proportion of woodland Proportion of woodland in European countries Forests of Great Britain Forests of France Forests of Italy Forests of Germany Forests of United States American forest trees European and American forest trees compared The forest does not furnish food for man First removal of the forest Principal causes of destruction of forest Destruction and protection of forests by governments Royal forests and game-laws Effects of the French revolution Increased demand for lumber Effects of burning forest Floating of timber Restoration of the forest Economy of the forest Forest legislation Plantation of forests in America Financial results of forest plantations Instability of American life.
Thus, then, by acting upon the blood, climate has wrought and is working such changes upon man. But why are constantly-acting causes so slow in producing their effects? How is it that countless generations must pass away before purely climatic causes, potent as they are, begin to manifest themselves in physical changes in the races of men exposed to them?
The analogy between such cultivated local races and the local races of nature is quite striking. The practice of seed exchange rests for a large part on the experience that the characters, acquired under the definite climatic and cultural conditions of some select regions, hold good for one or two, and sometimes even more generations, before they decrease to practical uselessness.
It will be my object to show in this series of papers, not only that the absence of the climatic and atmospheric conditions essential to organic life as we understand it, must have rendered the previous existence of any living beings impossible, but also that the completeness of the Animal Kingdom in those deposits where we first find organic remains, its intelligible and coherent connection with the successive creations of all geological times and with the animals now living, affords the strongest internal evidence that we have indeed found in the lower Silurian formations, immediately following the Azoic, the beginning of life upon earth.
If he does not thus envisage the immense background of his special interests, he will lose the most precious feeling for interplay and proportion without which all specialism becomes distorted and positively darkened. Now, the main factor in life on this planet is the planet itself. Any logically conceived survey of existence must begin with geographical and climatic phenomena.
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