Show LENGTH OF LIVE LI VS MORTALITY National efficiency depends partly party on natural resources partly party on the integrity of social institutions partly on human vitality and Is i a rea reaction ton against the old fatalistic creed that deaths inevitably oc occur 01 oc- oc cur c Ul at a constant rate The TIme new motto is it I Is within th time the power of man mal to rid lid himself of er e every parasitic dis dis- ease longevity varies In different times and places The average a length o of life In iii Denmark and Sweden exceeds fifty years years- in iii India it I falls fals short of twenty fIve twenty In ope It I has increased In 50 years from less legs than twenty to over o forty years vears In lii eals Massachusetts in iii II less than half a cen cen- tury It I has bias increased five years As lon longevity evly increases mortality ty decreases decrease TIme The death deaU rate in the time registration area of the United States State Is 5 per thousand in In it I Is about 42 per thousand In cities it varies I from sixteen to forty Tho The death rate mate has hams been decreasing during several cen een- tunIcs In tIme the seventeenth and amid eighteenth centuries It I was to fifty and amid dur dur- ing gl the e. e V It nest eT is 1 now periods fifteen mos rose In ns as Havana high t time the as death rate late after afier American occupation fell fel from P O fifty to about twenty The Time greatest reductions have ha been effected among children The mortality beyond the tIme a age e of 50 years has remained sta eta diseases have decreased such as tuberculosis which Is now one one- third as ns prevalent as two t generations one ago age t fever fe Et which in Munich af aften after af- af ter ten time the elimination of ot cesspools cesspool decreased de de- de- de creased 97 per remit cent and in iii Lawrence Mass af after I the time introduction tiomi of a mu public 01 1 water filter fler decreased er over 80 SO per cent Smallpox has practically disappeared since vaccination lol was employed ed and vellow yellow vel- vel ellow low fever since Its Is mO mosquito origin has has bias been een known American Health Magazine |