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       2. The effects of a gradual decrease in the amount of salt in the diet.

Five Ooriya prisoners observed during fifteen consecutive days.

Batch B. Total
quantity
of urine.
Chlorides
of urine.
Chlorides
of fæces.
Weight
of pris.
R.B.C.
average
count.
Salt
intake.
Chlorides of
sweat.
  c.c. grms. grms. lbs.   grms. grms.
Average per
man daily.
Five prisoners,
Ooriayas.
8,970 89.00 2.36 98.8 4,550,000 99.71 2.51
10,100 91.00 3.65 98.8 99.71
9,020 80.72 2.75 98.8 99.71
8,180 76.54 1.60 98.7 99.71
Do.   8,130 62.80 2.31 97.6 4,570,000 73.8 =1.09
9,190 62.49 3.80 97.9 73.8
8,880 62.12 3.02 98.2 73.8
8,550 72.58 3.26 98.1 73.8
Do.   8,390 44.46 3.16 97.9 4,520,000 49.2 =0.41
grm.  
6,610 46.27 3.14 97.8 49.2
8,000 43.16 2.02 97.7 49.2
7,500 43.20 2.16 97.5 49.2

     What do we learn from this investigation ?

           With practically 20 grms. of salt daily per man:—

                 (i) 84.5 per cent. is absorbed and passed out in the urine.
                 (ii) 2.5 per cent. is unabsorbed and passed out in the fæces.
                 (iii) 13.0 per cent. is absorbed and eliminated in the sweat.
                 (iv) average body-weight = 98.8 lbs.
                 (v) average quantity of urine passed = 1,816 c.c.
                 (vi) average number of r.b.c. = 4,550,000.

           With 14.76 grms. of salt per man daily:—

                 (i) 88.1 per cent. of the salt is absorbed and passed out in urine.
                 (ii) 4.2 per cent. is unabsorbed and passed out in the fæces.
                 (iii) 7.7 per cent. is absorbed and eliminated in the sweat.
                 (iv) average body-weight=97.9 lbs.
                 (v) average quantity of urine passed=1,740 c.c.
                 (vi) average number of r.b.c.=4,570,000.

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