of the embryous membrane, a little flour adhering to it, and some traces
of the teguments Nos. 2, 3, 4, and 5. This coarse tissue-weighs about 14
grammes, and to determine its action through its presence, place it in 200
grammes of water at a temperature of 86 deg.; afterwards press it. The liquid
that escapes contains chiefly the flour and cerealine. Filter this liquid,
and put it in a test glass marked No. 1, which will serve to determine the
action of the cerealine.

The bran should now be washed until the water issues pure, and until it
shows no bluish color when iodized water and sulphuric acid are added; when
the washing is finished the bran swollen by the water is placed under a
press, and the liquid extracted is placed, after being filtered, in a test
tube. This test tube serves to show that all cerealine has been removed
from the blades of the tissue. Finally, these small blades of bran, washed
and pressed, are cast, with 50 grammes of lukewarm water, into a test tube,
marked No. 3; 100 grammes of diluted starch to one-tenth of dry starch
are then added in each test tube, and they are put into a water bath at
a temperature of 104 deg. Fahrenheit, being stirred lightly every fifteen
minutes. At the expiration of an hour, or at the most an hour and a half,
No. 1 glass no longer contains any starch, as it has been converted into
dextrine and glucose by the cerealine, and the iodized water only produces
a purple color. No. 2 glass, with the same addition, produces a bluish
color, and preserves the starch intact, which proves that the bran was well
freed from the cerealine contained. No. 3 glass, like No. 1, shows a purple
coloring, and the liquid only contains, in place of the starch, dextrine
and glucose, _i. e_, the tissue has had the same action as the cerealine
deprived of the tissue, and the cerealine as the tissue freed from
cerealine. The same membrane rewashed can again transform the diluted
starch several times. This action is due to the presence of the embryous
membrane, for after four consecutive operations it still preserves its