National Geographic : 1892 Mar 26
96 General A. W. Greely-Geography of the Air. scattered over the world relative to, and in the interest of, the United States. The great value set on this publication both by skilled meteor ologists and by the reading public of this and other countries has been a source of astonishment and gratification to other chiefs and to myself. As to the opinion of the distinguished meteorologists abroad, recalling the saying that imitation is the sincerest form of flat tery, it is to be remarked that monthly publications similar in literary form and substance have been instituted in Canada, Germany, Great Britain, India, Jamaica, Mexico and Victoria. Among other valuable compilations and graphic representa tions of climatic data for the United States in general published by the Signal service may be mentioned: 1. Isothermal charts for each month of the year, based (a) on observations of ten years, and also (b) on observations of eighteen years. 2. Charts of normal temperature at 8 a. m. and 8 p. m. for each decade in the year. 3. Charts of absolute maxima and minima in each decade and also for each year at all Signal service stations (awaiting press). 4. Charts of isotherms and isobars and prevailing winds for each month from January, 1871, to 1873. inclusive. 5. Tables indicating diurnal fluctuations of temperature for each hour and month at 47 typical and representative stations. 6. Charts and tables of average dates of first killing frosts of autumn and last killing frosts of spring. 7. Charts and tables showing the normal rainfall for each month based on record (a) of 10 years; (b) of 18 years; (c) of 20 years (May and June; rest awaiting publication). 8. Charts and tables showing the rainfall for each month from January, 1870, to December, 1873. 9. Excessive precipitation for month, day and hour at all available stations from establishment to 1890. 10. Charts for each month, showing the probability of rain at all Signal service stations as deduced from 18 years' observations. 11. Charts and tables of possible annual evaporation. 12. Charts of average cloudiness for each month of the year. 13. Charts of most frequent wind-direction and average hourly velocities at 65 typical and representative stations at 8 a. m. and 8p.m.
1892 May 15
1892 Feb 19