| 36.2 | 1.086
Indian corn, grain. | 1.5 | -- | --
Rye, grain | 1.6 | 39.9 | .6384
--------------------+----------+-------------+---------------

Wheat bran, it will be observed, contains three times as much phosphoric
acid as is found in any of the other grains, and four times as much as
oats, beans, peas, or rye; so that if fed in excess it will readily
overcharge the urine with phosphates.

There is another point to be considered, however, in estimating this
danger. Wheat bran contains a far greater quantity of albuminoids and other
nitrogen-containing constituents than the common grains (these being made
up mainly of starch, which contains no nitrogen); and, all nitrogen-bearing
products contained in the blood and tissues being expelled from the body
mainly through the kidneys in the form of urea and (in cattle) hippuric
acid, it follows that the excess of urea formed when such feed is consumed
must load the urine with solids and bring it constantly nearer to the point
of saturation, when such solids (or the least soluble of them) must be
deposited.

The following table will show the relative amounts of the nitrogen-bearing
products in wheat bran and some of our common grains:

_Nitrogenous matter in wheat bran and some common farm grains._

-----------------+---------------+----------------+----------------------
Kind of grain. | Albuminoids | Woody fiber | Total nitrogenous-
| (nitrogenous).| (nitrogenous.) | bearing constituents.
-----------------+---------------+----------------+----------------------
| _Per cent_ | _Per cent_ | _Per cent_
Wheat bran. | 16.1 | 8 | 24.1
Wheat, grain | 12.5 | 1.8 | 14.3
Barley, grain | 12.4 | 2.7 | 15.1
Oats, grain | 11.8 | 9.5 | 21.3
Rye, grain | 10.6 | 1.7 | 12.3
Indian corn | 10.1 | 1.7 | 11.8
-----------------+---------------+----------------+----------------------

It will be observed that, with the exception of oats, none of the grains
contain more than two-thirds of the nitrogenous material present in the
wheat bran, while in the case of rye and maize there is practically but
one-half. Even in the case of oats the albuminoids, which are the more
digestible pr