OCR Text |
Show , Critical Periods In life. There are two periods of life in which the powers of resistance to adverse : influenced influ-enced are excessively weak, ivf tiom birth to 5 years of age but especially espe-cially in the first year of existence, the pTwer of life is very feeble aud to is the reason that so many infants die suddenly sud-denly in convulsions. Again, after the age of 65 is passed the vital tenacity u lowered, the substance of the heart and of the muscles in general becomes fatty, and there is imminent liability -to. sudden sud-den failure of the heart's action.-Chat. ter. |