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(Excerpt from The Climate of Chicago The earliest meteoro...)
Excerpt from The Climate of Chicago The earliest meteorologic Observations that have been preserved were made at Fort Dearborn, near the lake shore, in July, 1832. This series was continued until December, 1836, when there is a gap up to December, 1856, excepting a few Observations at the Mechanics' Insti tute, in 1844. From January 1, 1858, to October, 1859, no records are on file, but since November, 1859, a continuous series of observations has been maintained down to the present time, with the exception of 14 days in October, 1871, which were lost in the great fire Of October 8 and 9. These remarks apply to Observations of temperature. For rainfall the records are not so complete. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Henry Allen Hazen was born on January 12, 1849 in Sirur, Karnataka, India, about 100 miles east of Bombay. He was the son of Reverend Allen Hazen, a missionary of the Congregational Church, and Martha (Chapin) Hazen, and was descended from Edward Hazen who had settled in Rowley, Massachussets, in 1649. At ten he came to the United States, where he remained the rest of his life.
Hazen's primary schooling was obtained at St. Johnsbury, Vermont, and his academic training at Dartmouth College, where he graduated in 1871. After his graduation he spent one year at the Thayer School of Civil Engineering.
Hazen became an instructor in drawing in the Sheffield Scientific School, then until 1881 he was assistant at the same institution to Prof. Elias Loomis in physics and meteorology and also aided the latter in the preparation of several of his meteorological papers.
In the spring of 1881, Professor Cleveland Abbe recommended that Hazen be appointed a computer in the "Study Room, " a division of the meteorological section of the United States Signal Service, in Washington, established for the purpose of developing the scientific aspects of its work. This appointment was made on May 1, 1881. Later he was promoted, and often took his turn, beginning with October 1887, in making the official forecasts of the weather, and also, beginning with December 1888, in editing the Monthly Weather Review.
At the same time he assisted in the work of the records division. In July 1891, on the transfer of the meteorological service from the Army to the Department of Agriculture, he was made professor of meteorology in the Weather Bureau, a position of major rank, and was assigned to the forecast division.
During his entire connection with the meteorological service Hazen was exceedingly active in assembling statistics, conducting experiments, and developing theories. One of his publications, Reduction of Air Pressure to Sea Level (1882), concerned the difficult problem of finding from the actual readings of barometers what their readings would be under like weather conditions at sea level, a matter essential to the construction of weather maps. Another monograph dealt with the climate of Chicago.
He also published a great number of smaller papers, covering a wide range of subjects. His experimental work involved studies on the measurements of humidity, the determination of the dew point, the proper exposure of thermometers to secure accurate values of the temperature of the air, and other instrumental problems. The thermometer shelter he devised was adopted by the Weather Bureau for general use in 1885 because it was both simple and efficient.
His theoretical work, also, was voluminous, but in this he was not so successful. Some of his ideas appeared to his less emotional colleagues as no less than wild, but their weaknesses he never would admit. He was an enthusiast in regard to the value of a knowledge of the condition of the free air and made several balloon ascents for the purpose of studying the vertical distribution of temperature and humidity.
While hurrying on a bicycle to his duties as forecaster, on the night of January 22, 1900, he was so injured by a collision with a pedestrian, that he became unconscious and passed away the following evening.
Hazen went down in history as an eminent meteorologist of the United States Weather Bureau and as educator. He was assigned special duties, including investigation of the psychrometer and the proper exposure of thermometers, also, the study of thunderstorms. He was also the author of many meteorological writings and inventor of several valuable scientific instruments.
(Excerpt from The Climate of Chicago The earliest meteoro...)
( This work has been selected by scholars as being cultur...)
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Hazen never married.
