Water, 56.5
Solid, 43.5

The solids are almost entirely organic matter, the inorganic salts in the corpuscles amounting to less than 4 per cent. In 100 parts of dried organic matter of the corpuscles of human blood there are:

Hæmoglobin, 90.54
Proteid substance, 8.67
Lecithin, .54
Cholestrin, .25

The blood is distributed as follows in round numbers:

In the heart, lungs, large arteries and veins, About one-fourth.
In the liver, About,, one-fourth.,,
In the skeletal muscles, About,, one-fourth.,,
In the other organs, About,, one-fourth.,,

The average proportion of the principal constituents of the blood in 1,000 parts is:

Water, 784
Red corpuscles (solid residue), 130
Albumen serum, 70
Saline matter, 6.03
Extractive fatty matter, 7.77
Fibrine, 2.20

The chemical composition of hæmoglobin is:

Carb. Hyd. Iron. Nit. Oxy. Sulph.
54.2 7.20.42 16.0 21.5 6.7
Mucine, 52.2 7.0 12.6 28.2
Proteids, 51.5 6.9 15.2 20.9 0.
to 54.5to 7.3 to 17.0to 23.5to 2.0