14 DEPARTMENT BULLETIN 975, U. S. DEPT. OE AGBICITLTUBE. 
Chart 6. One Potxd of Lettuce, 
(2 large heads.) 
One pound of lettuce supplies about 70 calories of energy, 5 grams (about 
i ounce ) of protein. 0.16 gram of calcium, 0.15 grain of phosphorus, and 2.7 
milligrams of iron. Ir would fumisli. therefore. 2 per cent of the energy a 
man needs daily, 5 per cent of the protein. 25 per cent of the calcium. 12 per 
cent of the phosphorous, and IS per cent of the iron. This is showu in the 
following chart : 
ENERGY 2% 
PROTEIN 
CALCIUM m 
PHOSPHORUS I 
IRON 
I8%\ 
'O 20 Jfl 40 SO 6 To 80 9o 
Chabt 6. — Proportions of energy, protein, calcium, phosphorus and iron needed per man 
per day furnished by 1 pound of lettuce. 
Chart 7. One Potxd of Cabbage. 
(About | of an average head.' 
One pound of cabbage supplies about 105 calories of energy, 6 grams (about 
i ounce) of protein. 0.17 gram of calcium, 0.11 gram of phosphorus, and 4 
milligrams of iron. Ir would furnish, therefore, 3 per cent of the energy a 
man needs daily. 6 per cent of the protein, 25 per cent of the calcium, 9 per 
cent of the phosphorus, and 27 per cent of the iron. This is shown in the 
following chart : 
ENERGY 
PROTEIN 
CALCIUM 
PHOSPHORUS 
IRON 
3lk 
6fM 
9fk 
i/m 
io 20 so 4-o j~o io 7a 8o Po 
1 i ( i 1 1 , .!.,_ 1 i 
Chart 7. — Proportions of energy, protein, calcium, phosphorus, and iron needed per man 
per day furnished by 1 pound of cabbage. 
