A System of Physiologic Therapeutics Volume 9; A Practical Exposition of the Methods, Other Than Drugging, Useful, in the Treatment of the Sick (Paperback)

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. 1902 Excerpt: ... his study of the hot springs of the Pyrenees in 1835, compared his observations with those taken at intervals for nearly one hundred years previously, and in many cases found a remarkable uniformity in the temperatures recorded at different times throughout this period. In regions where earthquakes and active volcanic manifestations occur, fluctuations of temperature in springs have, however, been common. In the case of American springs, the data are insufficient for careful comparisons in respect to changes of temperature. In one case, however, --that of the hot springs of Salt Lake City, --a considerable variation has been noted. Ordinarily these springs have a temperature of 1220 F. (500 C), but in 1889, for one month (June to July), and at irregular intervals in preceding years, THERMAL WATERS OF THE UNITED STATES 315 the springs became so cold as 500 F. (io C). The cause of this variation has not been determined. Observations comparing recent temperatures of the thermal springs of Virginia, North Carolina, and Arkansas, with those taken years ago, show no differences beyond what are due to variations in the instruments employed. The most recent observations on the deep well at Wheeling, West Virginia, by Dr. Wm. Hallock, state that down to 3200 feet the gradient is i F. for every 81.5 feet (equivalent to i C. for 44.72 meters); whereas the last few hundred feet show an increase of 1 F. for about every 60 feet (equivalent to i C. for 32.92 meters). Different authorities state the downward increase of temperature as from i F. in 23 feet (7.012 meters) descent, to i F. in 68 feet (20.731 meters). However, as already stated, the geologic structure and the character of the rocks should be considered. Distribution of Thermal Waters in the United States In the.