. Dr. Evans' How to keep well; . ureof 171. In another groupof cases the averageblood pressure of thoseunder 40 accepted was125. The average ofaccepted risks at 40 to44 had an average pres-sure of 128; 45 to 49,130; 50 to 54, 132; 55to 60, 134. When a life insur-ance company insures aman it counts upon hisliving out a certain ex-pectancy. The actualdeath rate among agroup of insured who had a blood pressure of 143 was but 47 per cent ofthe expected death rate. In the group with a pressure of 150 and over, thedeath rate was 70 per cent of the expectancy. Of those rejected and havinga pressure o
. Dr. Evans' How to keep well; . ureof 171. In another groupof cases the averageblood pressure of thoseunder 40 accepted was125. The average ofaccepted risks at 40 to44 had an average pres-sure of 128; 45 to 49,130; 50 to 54, 132; 55to 60, 134. When a life insur-ance company insures aman it counts upon hisliving out a certain ex-pectancy. The actualdeath rate among agroup of insured who had a blood pressure of 143 was but 47 per cent ofthe expected death rate. In the group with a pressure of 150 and over, thedeath rate was 70 per cent of the expectancy. Of those rejected and havinga pressure of 171, the death rate was 153 per cent of the expectancy. Thosehaving a high pressure, 171, and some organic disease had a rate of 161 percent of the expectancy. The causes of death in the high blood pressure cases were apoplexy, 13;Brights disease, 10; heart disease, 8; arteriosclerosis, 6; remainder, scat-tering. In the cases in which the blood pressure averaged 152, apoplexy andheart disease led but the lead was not so Fig. 211.—Method of Taking Blood Pressure. PROTECTING THE BLOOD The blood runs from the heart through the arteries to the capillariesand then back through the veins to the heart. The blood is always inside aclosed tube. When the structure of man was planned it was seen at oncethat the important fluid—the blood—must be protected against the other hand, it was seen to be necessary, in order that the tissues benourished, that the liquids ooze out of the vessels so that the cells of the bodymight soak in them. Therefore the small blood stream was so arranged thatfood could easily soak out but that harmful things could not soak in. Now, whenever any arrangement for soaking out is provided an ar-rangement for soaking in must also be provided; else presently everythingwill be out and nothing will be in. PROTECTING THE BLOOD 607 The arrangement provided was that whatever had got out could getback in again by flowing into certain spaces and t
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