In addition to carbonates of sodium, especially the hydrocarbonate known
as glycolate, the bile apparently contains ammonium sulphate combined
with hydrocarbon (taurin); but this results from the transposition of
sodium sulphate and gelatine. Gelatine contains six atoms of hydrocarbon
joined with two of ammonium carbonate, a group which is separable by
chemical action into five of carburetted hydrogen with ammonium
carbonate (leucin or gelatine milk), C_{5} H_{10}, CO_{2}, NH_{3}, and
into one of carburetted hydrogen with ammonium carbonate (glycin or
gelatine sugar), CH_{2}, CO_{2}, NH_{3}. This latter substance, gelatine
sugar, is not produced in the liver, as it exists already in the blood
gelatine. In an isolated condition it has the property, in virtue of its
ammoniacal acids and its carbonic acid bases and, therefore, of both
combined, its salts, of producing chemical fixation. This property is
conveyed to the undivided blood gelatine in which the gelatine sugar is
contained intramolecularly.

Since normal blood albumen is inconceivable without sulphur it is
absolutely essential, in accordance with our knowledge of the
constituents of the bile and their origin, that our nutriment should
contain a sufficiency of sodium sulphate, if normal blood serum is to be
produced. The use of pepsin for this purpose cannot serve nature's
purpose, as it contains neither sodium carbonate nor sodium sulphate.
Our blood must be given a fresh and sufficient supply of sodium
carbonate and sodium sulphate via our food, if it is to produce normal
bile and supply the requisites of normal nutrition.

It is erroneously held that sodium sulphate is simply a laxative, even
Borner's "Royal Medical Calendar" so classifies it. Often it discharges
this function, it is true, in concentrated solution (one to five). But
it is an important ingredient of healthy blood albumen (one to one