METEOROLOGY. 963 



Climate of Oklahoma, (J. E. Morrow {OJdahoma Sta. Bui. 32, pp. 

 3,1,7,8). — Tables are- given whicli show the rainfall at 21 stations in 

 Oklahoma and Indian Territories in 18!M), at 12 stations in Oklahoma 

 Territory during- 8 years (1880-90), and at l^^lreno and Oklahoma City 

 during each month for (» years (1891-'0()), and the monthly mean tem- 

 perature of Oklahoma Territory for the same period (18!)l-'9(]). 



"The year 1S9() was somewliat exceptional in Oklahoma so far as the climatic con- 

 ditions were concerned. The average mean temperature, 61.7^, as shown by reports 

 from 21 stations, including some in the Indian Territory, was higher than in 1895. 

 No report was made of a temperature below zero at any time during the year, and in 

 but two cases was the minimum below 6°. The maximum temperature was unusu- 

 ally high, every station reporting a maximum ranging from lOf to IL")'^. With one 

 exception tlie highest temperature w;is at some date between August 1 and 20. With 

 one exception each station reported a uiaximum of over 100 in July, as did all but 

 two in September. 



"The rainfall Avas below the average in most parts of the Territory. The average 

 as reported by 17 stations in Oklahoma was 21.09 in., ranging from 15.04 at Beavi r 

 in the far northwest, to 31.71 at Guthrie and 31.40 at Stillwater. In many cases the 

 rainfall was not distributed well throughout the year. Thus, at Stillwater, 11.69 in. 

 fell in 31 days from June 21 to July 21. A still more striking case is that of Uurnett, 

 where, out of a total rainfall of 26.08 in. for the year, 6.02 in. fell in one day in May. 

 At Oklahoma City the rainfall was the least for any year of the last six and 10.74 in. 

 less than the average for the preceding 5 years. . . . Eecords at Fort Reno for 

 14 years (not quite complete for some of the earlier years) give an average rainfall 

 of 27.67 in. per year. For the first 7 years the average was 29.93 in., for the last 7 

 years 25.41 in., or a difference of over 4^ in. per year in the two periods. . . . 



"A maximum temperature of lOC^ or more may be expected in almost any part of 

 the Territory in July, August or, possibly, September. Usually the time during 

 which extreme high temperature continues is short. A uiiniumm temperature of 12*^ 

 or even 20^ below zero is ])0ssible, but unusual. The mean average temperature for 

 the year is from perhaps 59 to 62^^. 



"With occasional marked excei)tions the annual rainfall decreases from the east to 

 the west and, in not so marked a degree, from the south to the north. . . . 



"For 1896 7 stations lying east of 97 ' 30' west longitude showed an average rain- 

 fall of almost 27 in., while 7 lying west of this line showed an average of about 

 24.50 in. . . . 



"In general the heaviest rainfall is during the months from May to August, inclu- 

 sive. In 1896 only 2 stations in Oklahoma reported a rainfall over 2 in. for either of 

 the first months of the year." 



The climate of Utah, .1. Dryden {THah Sta. Bid. iT^pp.ns, charts 

 4,Jif/s 8). — A summary is given of observations on temperature, pressure, 

 humidity, precipitation, etc., at 13 stations in the State during 189G, and 

 the climate of the State as indicated by the averages of observations 

 during the ~> years ending with 1895 is discussed. 



The annual summary for 189G is as follows : Mean annual temi>erature, 

 40.9° F.; mean daily range, 22°; annual range, 108°; highest, 97°; 

 lowest, — 11°; highest sensible, 75°; mean humidity, 54; mean dew- 

 point, 45; air pressure 24.9G.'> in.; total precipitation, I<i.l5 in.; last 

 killing frost, May 18; first killing frost, October 10. 



The principal features of the climate of Utah are, of course, the com- 

 paratively high temperatnres with limited rainfall, but it is shown that 

 although "the air temperature in this dry climate is (;nnsidcr;ibly higher 



