METEOROLOGY 



WATKK. 



441 



records of observations at the station at Wooster, Ohio, on temperature, precipita- 

 tion, cloudiness, direction of the wind, etc., and for comparison, similar data foi 

 previous years and i'<>r other parts of the State. The following is a summary of 



result.-: 



Sn iiiiiki i>/ ni mi li OTOlOQlCal oh.-iri nt ion> 



Oh 



Annual precipitation in Oklahoma and Indian Territory, C. M Strong 

 i Oklahoma Sta. /.'/</. 1905, />/>. 60,61).- The total annual precipitation a- observed ai 

 25 places in Oklahoma is given for l ( .«>4 and L5 preceding years. A. similar sum- 

 mary is given of observations a1 ll places in Indian Territory. The average annual 

 rainfall for Oklahoma varied from 38.93 in. ai Lincoln to L6.34 in. ai Beaver; for 

 Indian Territory from 42.40 in. at South McAlester to 26.99 in. at Chickasha. 



Meteorological observations on Ben Nevis, Lord McLaren ii ll. '/.'/•/ 

 Brit. Assoc. Adv. Sci. } 1904,pp. 55-60). — A brief account is given of a continuation of 

 observations during L903 at the low-level observatory a1 Fori William and the high- 

 level observatory on lien Nevis. (See also E. S. R.. l">. \>. L25.) The principal 

 results arrived at are thus summarized: 



•• l When the difference of the mean temperatures of the day is only li' . or 

 less, the calculated sea-level pressure for the top of the mountain is markedly greater 

 than at Fort William, and the accompanying meteorological conditions arc anticy- 

 clonic, the weather being clear, dry, and practically rainless; (2) when the difference 

 of temperature is L8°, or greater, the meteorological conditions ;irv cyclonic, and the 

 accompanying weather dull, humid, and rainy. 



"The large result here arrived at empirically is in accordance with the principle 

 iaid down by Dalton, vi/.., that air charged with vapor or vaporized ail is specifically 

 lighter than when without the vapor; or, in other words, the more vapor any given 

 quantity of atmospheric air has in it the less is its specific gravity. 



"Another important result is that the cases of small differences of temperature 

 between the two observatories are chiefly occasioned hy an increase of temperature 

 at the top of the mountain, and huge differences of temperature by a decrease of tem- 

 perature at the top. 



"The intimate relation thus disclosed between the varying temperatures and sea 

 level pressures of a high-level and a low-level station is of prime importance in fore- 

 casting the weather, inasmuch as it reveals, in a way not hitherto attempted, the 

 varying conditions of the hydrometric states of the atmosphere, particularly at high 

 levels, upon which changes of weather so largely depend. The setting in of a process 

 of saturation of the atmosphere at great heights may thus he made know n. even w hen 

 no cloud has yet been formed to indicate any such saturation. The important hear- 

 in- of these results on such practical problems in meteorology as the forecasting of 

 the monsoons of India is evident." 



14462— No. 5—06 3 



