Where did life begin? : A brief enquiry as to the probable place of beginning and the natural courses of migration therefrom of the flora and fauna of the earth; a monograph / by G. Hilton Scribner.

Gilbert Hilton Scribner

Date:: 1883

Credit: Where did life begin? : A brief enquiry as to the probable place of beginning and the natural courses of migration therefrom of the flora and fauna of the earth; a monograph / by G. Hilton Scribner. Source: Wellcome Collection.

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$now too cold, for such life as inhabits the warmer parts of the earth, these now colder parts, in passing from the extreme of heat to the extreme of cold, must have passed slowly through temperatures exactly suited to all plants and all animals in severalty which now live or ever lived on the earth. Sixth.—\i the concurrent conditions which have usually followed lowering temperature followed the climatic changes in this case, life did commence on the earth within one or both of certain zones surrounding the poles, and sufficiently removed therefrom to receive the least amount of sunlight necessary for vege- tal and animal life. It seems almost superfluous to say that those parts of the earth which first became cool enough to maintain life had a climate warmer at that time than that which we now call torrid. It was for an epoch, and probably a very long one, as hot as it could be and maintain life. It is also quite obvious, in the light of the foregoing considerations, that as the temperate zones have always received more heat from the$