THE METABOLISM OF THE BODY. 453 
We give another series of tables, founded on experiments 
by different investigators from which a number of conclusions 
may be drawn: 
The Requirements of an Adult Man for Twenty-four Hours. 
Laborious work. 
At rest. Moderate work. 
FOOD IN GRAMMES. (Playfair.) | (Moleschott.) 
(Playfair.) - (V. Pettenkofer 
and V. Voil.) 
Proteids:y guise vasnisncis 70°87 130 15592 137 
Patsy i.ysaesisa as ness 28°35 84 70°87 117 
Carbohydrates...... .. 310°20 404 567°30 352 
Cc H | N (0) 
120 grammes albumin, containing......... 64:18 | 8-60 18°88 | 28:34. 
90 grammes fats, containing............. 70:20 | 10:26 abate 9°54 
330 grammes starch, containing........... 146-82 | 20°33 wee. | 162°85 
Ota sissies eels Gags eee eau eaeane 281:20 | 39°19 | 18:88 | 200-73 
It has further been estimated that 744 grammes of oxygen 
are respired, 2,818 grammes water drunk, and 32 grammes of 
salts consumed. | 
The total ingesta have been estimated at vy of the body 
weight; and the daily metabolism of the body is calculated as 
leading to the transformation of 6 per cent of the water, 6 per 
cent of the fat, 1 per cent of the proteids, and 4 per cent of 
the salts of the body. 
The Egesta of an Adult working moderately. 
HO c H N oO 
By respiration............... 6% 330 248'8 g 651715 
By transpiration..............4 660 20 sus seals 72 
By urine............. a Riek wees 1,700 98 3:3 15°8 111 
By TCS sec weteasensiosieweees 128 20-0 3:0 30 12:0 
Totalcs.secaseeiaweaweseasa 2,818 281:2 63 188 681-45 
If we lay down the rule as has been done, that the nitrog- 
enous should bear the proportion of 1 to 34-44 of non-ni- 
trogenous, an inspection of the following analytical table 
will show how these various food-stuffs conform to such an 
estimate. 
