Show The Relation oft of to T UI 1111 whole theory of ot clothing end nna t Us is s 1 I relation to temperatures Is con con- d by bj Dr In to tho the following paragraphs r which will b suggest where hero many colas colds como come from rom I rho The nude DUal body of 01 a n healthy adult when at nt rest maintains Its normal warmth df or 00 un degrees degree most easily lit at t an na air teme temperature tern tem of ot about 80 this may be called the tho Indifferent temperature and aDd ta is reduced re roo b by very light lIht Summer Sommer clothing ton to n about ont it by br heavy bevy Winter dress reAs to about 05 sw degrees J under these circumstances wo we feel fed Just comfortable when lying down dowa o 0 or otherwise Inactive At lower tern tem W wo are ato obliged to famish nn an additional amount of ot body bent hent this we accomplish by means of ot an nn accelerated ted oxidation of ot our tissues In Ip Its turn requiring re re- requiring quiring an nil Increased 1 supply of oxygen oyen n through augmented an respiratory activity Vo Wo achieve this extra oxidation mod most t readily by means meaDS of muscular exert exertion on moderato moderate muscular exercise such Guch a RS i s walkIe waikin at n a steady gaIt salt lowers lower the Ia Indifferent In- In different temperature about ten degrees degree s more Dore We iVe e can caD Indeed effect elect a 1 still further r reduction by violent exercise but this t tao Isto ta Is S to so o rapidly limited by muscular exhaustion o that It is available only for tor n brief space spat o i ot We IYo therefore artificial al bent Dent in ID our rooms whenever their temperature tem tern falls Calls much below 03 GS degrees out ont of ot doors dome when wo we move more about freely wo we enn eau with extra wraps napa and over over- coats coat at nt a 11 lower temperature down to shout nt SG Z li When the t temperature of or tho the air ex- ex reeds eeds 7 75 dt degrees rees the tiro body even cn though at rest and lI lightly clothed moro more beat bent than Is needed for tor the maintenance of ot Its Hs normal warmth The disposal of or orUal this ibis surplus heat hrat la le effected In to the first Instance by radiation which If le Ie however at bent beet limited to a u moderate amount and greatly interfered with by even a minimum m o of Tho float resort of the human organ m n to m meet meat et tho the stated condition Is the pro pro- d n and evaporation of ot sweat sn which ch dis 1 I is te very effective under favorable rheum circum r I Lances ti Tit b mere production of or sweat bow how Y l' l J cur ever edits calls ns for or n additional work on tho part of ot the tho vasomotor tor apparatus and oDd especially an accelerated d action of ot the heart heat beat Is therefore altogether n stimulant a 11 point frequently tI disregarded In therapeutics Many practitioners consider very warm climates as S generally sedative but bat tho the confusion with tho the merely mild climates U is obvious The border line Joe Is about 75 73 degrees en even this this IK is B as ta wo we have havo seen seeD somewhat too high t td tb be truly sedative whenever any n mount amount of ot physical exertion Is U desirable In subjects calling for tor the last Jast a n lower level of ot temperature Is quite essential to meet tho the Indication of ot rest The matter does not rest with TUb the mere secretion of ot sweat Its rapid and find complete completo evaporation from the surface of ot the tx body Is really the tho chief point In this conD connection an entirely now new factor comes cornea Into luto play play play- namely the the- relative humidity of ot the surrounding sur- sur rounding air AP Approximate saturation o ol 01 tho rho atmosphere with filth vapor apor tot U bus bets evaporation which becomes become more and more loore effective AS tho the proportion of ot mole mois tare ture the relative humidity of ot the air fall y below the point of ot saturation per cent We Wo aro are often otten told for tor example thai tha the Winter weather r In New York City I Is s damp during the cold spells us ns n 1 matter matte t I of ot fact the relative e hi ht ranges trout from u v down to 40 ao per cent and less leee on these occasions YS We a are also Informed that the thu intense cold eold In the Adirondack Mountains U is dry The truth Is that the mean menn rI relative U o humidity la to lower In Winter In tho seaboard region shout about l' l New err York lurk City than anywhere bero else In 10 the tho State and ItIs ItIs It U UIs Is Ill likewise true that the traditional dry cold of or Sad and Iowa Jowa is also nilio r rJ G pe pC C cent Dt moIster than that 0 of the Middle At M t coast So much for tor popular Impressions on thin hire subject the fact tact remains that the tho proportion of ot moisture at low temperatures tempera t tomes tures Is practically Imperceptible unit and immaterial immaterial im im- material as ns the transpiration through the akin sUla Is In any case Insignificant In cold weather compared to Its Ita vest vast importance In la Summer r. r From SO 55 degrees upward on the tho other band the effects of oC moist H are contracted with dry air become Increasingly per per- g growing dominant when wilen the tho atmospheric temperature rises into the seventies At very high temperatures indeed in in- Ie- Ie deed dryness becomes absolutely c ellen ellen- gen Ual to the mere merC maintenance of ot Ute life A temperature near that of ot the body with t the tho air almost saturated d with moisture will Mil In la n a very short I time cause fat fatal fata l fio called so-called ed he h t t. t sunstroke o or r as the result ou of the accumulation lation of oC body heat beat which is 18 y produced without t the or of el thou The frequent fatalities due to th the e combination ot of temperature an d humidity are oJO familiar Th The proverbially persistent cold Is i. Summer Summa r especially prevalent after atter a lon Ion hot bot g spell and is 15 caused C by by a a 0 ai i In n temperature that would ld almost at i cation In the tho cold season Reason A sudden rise of temperature far tar less Ius than an nn equal fall Cnn The Thc affects fo forma o n u as s r almost almot always nh takes place during the da dar time limo when a certain elevation Is expects expected d In a nap any ease case to tt latter la relatively harm harm- less lees when It occurs d during th the night bu but t more serious during the d day y when hen wo we a are arc re apt to be out of ot door doom and prepare for Cor a Q tie rte s of ot temperature instead of or a fat fail tall 1 Furthermore wo two must again recall that tha t man iliaD being essentially a n tropical animal i ti can withstand n rapid warming better bette r than thaD a sudden chill The Iho residents of or cold climates are arc large largel e excluded from the y benefits of oC r apy Change of ot climate necessarily DC mean s to them Increased warmth this involves 8 tb the dangers ID Incident y t tj to t I a lea t relative enervation which will t mako make a 0 return re- re turn to their former homes perilous risks T Th e of ot permanent removal from tram n a col M cl to a milt mild region IU air aw Illustrated fate of ot the Cape York ork by br fe In V the ea ad eAd ch char from Crom genial climate climate of oC New York the fr f ar results result is are re e n n worse than those tho City th tho o to a transfer from front New ew York to h d Thus the of or cold I the trop s ds seek leek health health within within their er ow own COuntries e effi climatic i ulu st t It Is s a 0 popular fallacy rang e on any ony cold collI and windy might readily expose td d taut the upper wM fluh n 11 few Inches lowering contributes only to the ax exit of or r The Tho air all current Is exactly in foul toul ul lil lill t the th h direction and a cold eold draught l from tho the top of ot the tho window window to t ds very ory much In tho the manner of or t V n a i the he n woo noor r r. r It is 19 therefore 1 extremely rdo a 0 person unaccustomed to f for or thIs to sleep directly sort or open window under nt oven o It if car Y covered on d n |