File:History of the American Civil War (1867) (14760302234).jpg

Identifier: historyofamerica001drap (find matches)
Title: History of the American Civil War
Year: 1867 (1860s)
Authors: Draper, John William, 1811-1882
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Publisher: New York, Harper
Contributing Library: Wellesley College Library
Digitizing Sponsor: Boston Library Consortium Member Libraries

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e, as a year, a month, a day. If we consider the case of rain, any obscurity in theseremarks will be removed. It is one thing to measure themechanical force with which the rain has come down, itis another to measure the quantity which in a given timehas been received. For heat we have accomplished whatis the equivalent of the former—the latter remains to bedone. A few pages hence these facts will be found to possesssingular importance. Every plant requires a certainmeasure of heat for its complete development. An ex-tension of the cultivation of cotton or tobacco, sugar-cane or corn, into more northerly regions, depends onthe principles here involved, and on the possibility ofsuch extension social and political consequences of thegreatest moment depend. From this digression I now return to the considerationof the climate of the Pacific coast, as manifested by itsisothermal lines, directing the readers attention to themap opposite. That map at once indicates a most extraordinary dif-
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110 WEST FROM 100 GREENWICH 90 DIAGRAM OF ISOTHERMAL LINES. 58 HEAT IN THE PACIFIC KEGION. (Sect. I. ference between the Pacific and Atlantic re-Extraordinary dis- . -p. . , ,iitributionofneatin gions. Duniigf the summer season the heat the Pacific region, y tm -i • is equally distributed m the former throughfifteen hundred miles of latitude; the line of 60° runsparallel to the coast. How different would every thingin the old colonial settlements on the Atlantic have beenhad no difference existed between St. Johas in New-foundland and St. Augustine in Florida! Yet that is ac-tually the condition of things in the newly-settled statesof the West. Moreover, we perceive that the general course of theisothermals in California and Oregon is more nearly northand south; in the Atlantic States they range west andeast. Hence, in the former countries, there is a compres-sion of climates into closely juxtaposed and exceedinglynarrow strands. If we desire to prognosticate the polit-ical results

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