The Birmingham age-herald., 1921-08-19
RECORD BREAKING HOT SPELL
By Science Service.

By Science Service.
 NRT AsHINGTON, August 1s.-- | MW Special. )-The hot wave l that this country is ex- periencing has been of unprecedented duration, according to weather ex- perts at the central office of the United States weather bureau here. There have been short durations of month or less when the tempera- lures were higher than during the present hot weather. but never be- fore, the weather men believe, cer- tainly not in the last 50 or 50 years whose temperature records have been dug into, have abnormal tempera- lures beep so everlastingly on the job.
 Even last winter, which we remem- Der as an extremely mild one, was the beginning of the extended heat wave. In the eastern and central states, east of the Rockies. for the last Il months, excepting only No- vember, temperatures have been con sistentIy higher than the average temperature over a long stretch of years, which is taken as standard.
 The people of Boston have been living in Philadelphia during the first six months of this year, so far as temperature is concerned, Alfred J. Henry, meteorologist at the weather bureau has found. The average tenn perature of Boston has been abormal- ly high and from January to June has equalled that usually experienced in Philadelphia.
 New York, Americas center of com merce, has been thermometrically To- cated for tho same period in Wash inston. the governmental center of the country, while Washington has been shifted seuthward and located on the boundary of Virginia and North Carolina.
 Out in the middle west, the same southward climatic travel has oc- cured. Des Moines. if 1t were located on the map by its temperature would be set down in southwestern Mis- souri, Professor Henry has found.
 Chicago has. however. been the hot spot of the country this summer. m anaIysis of reports show. July was the hottest month that that city has had for 51 years. It's average tenn perAture for the month was 2.S degrees warmer than any other month, while lit was ss deErsea higher than nor mal That city has been 50 continual lly hot that tho average temperature for July Is higher than the average
 normal highest temperature, while the average minimum temperature for the month is 2.1 degrees higher than the normal monthly mean. twelve July days of above 90 de-
 srees weather broke all previous
 record. and 64 days when the tenn perature was continually above nor mai were other record breakers. The accumulated excess temperature at Chicago from the first of the year to
 the end of July has been the large total of 1.75s desress This means that
 since January l. the average daily . excess in temperature has been S.3 de-
 grees,
 The southwestern parts of the l country and most of the Pacific
 coast have been fortunate enough , to miss most of the present hot weather. Druing the past months , there have been deficiencies in tenn perature in those regions rather than } excesses.
 } Western Europe has also experi- enced similar continued hot weather t here, and it has been accompanied by lack of rain, and is causing drausn' : lin England and France. How the rest t of the world is affected. weather i. bureau officials do not know, as data , from other sources has come in very slowly and are meager.
 :, The theory that sun spots have any : thing to do with the present no , spell is secuted by Prof. Charles F , Marvin, chief of the weather puTeAu g Some scientists in Europe and thi' |. country have declared that there NJ j. evidently some connection, but Prof : Marvin, after examining the data 1 that has been obt&ined on the In tensity of the suns radiation durini < the presence and absence of sun spots f has come to the conclusion that at . mospheric temperatures are not ore r ceptably iffsetSd by spots on the sun < .ws find that tsmpsrstures aA' Irainfail ssem to vary with the pres