[_Note_. Diets I, III and X have been practically discontinued at the
present time. Diets II, V and XI are standard. For data on salt mixtures
see Osborne, T. B. and Mendel, J. B. The inorganic elements in nutrition,
Jour. Biol. Chem. 1918, xxxiv, 131.]

_Salt mixture I (after Rohman)_

_grams_
Ca_3(PO_4)_2 . . . . . 10.00
K_2HPO_4 . . . . . . . 37.00
NaCl . . . . . . . . . 20.00
Na citrate . . . . . . 15.00
Mg citrate . . . . . . 8.00
Ca lactate . . . . . . 8.00
Fe citrate . . . . . . 3.00
______

Total . . . . . . . . 100.00


_Artificial protein-free milk_

_grams_
CaCO_3 . . . . . . . . 134.8
MgCO_3 . . . . . . . . 24.2
Na_2CO_3 . . . . . . . 34.2
K_2CO_3 . . . . . . . . 141.3
H_3PO_4 . . . . . . . . 103.2
HCl . . . . . . . . . . 53.4
H_2SO_4 . . . . . . . . 9.2