A concise analytical and logical development of the atmospheric system as God made it; and of the elements of prognostication, by which the weather ... book for the practical mind of the country - Softcover
Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1870 Excerpt: ...as will be apparent from comparison of the observations at St. Louis, by Dr. Engleman, and those at St. Louis Arsenal, which are but three miles distant from each other, and at Jefferson Barracks which is ten miles from St. Louis. Two things are very apparent from careful observation of these tables. In the first place, that there is a decrease of the mean annual temperature, corresponding to an increase of the solar spots, and a corresponding increase of temperature as these spots decrease. And second, that the temperature rises highest during the solar decade, when the spots are least numerous. These movements in temperature although they do not conform precisely to the increase and decrease of spot::, show clearly a connection between them. It may, and probably will be ascertained hereafter, that these irregularities which may be attributed to other causes, are owing to irregularities in the size of the spots, for you may have observed that Schwabe gives the number of groups which he observed during the year, but does not give their comparative size, nor furnish as I have said, any reliable comparison of the amount of obscuration. In connection with this subject, it is important you should understand a fact which is disclosed by the tables. In every decade, the year preceding or succeeding the minimum of spots, or that in which the minimum occurs, is colder than the latter year. In the "Philosophy of the Weather," I ventured to assume, that the fact might be owing to a more extended transit to the south, of the atmospheric system in winter, when the spots were least numerous. The depression of the thermometer in January and February, or February and March, at stations where other causes were least likely to operate, renders that assumption high...
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