The middlings form the inner coating of the wheat grain, next the floury or starchy portion, and contain particles of the germ and a larger percentage of carbohydrates than either shipstuff or bran, and a less proportion of fiber, while the percentage of albuminoids usually stands between that of shipstuff and bran.  The following data are obtained from the 4 lb. procured from a bushel of wheat: 

Lb. per Bushel
of Wheat. 
Water.                                   0.562
Ash.                                     0.138
Albuminoids.                             0.657
Woody fiber.                             0.142
Carbo-hydrates (starchy matters).        2.307
Fat.                                     0.193

SHIPSTUFF.

That part separated and known as shipstuff is a very thin layer next outside of the middlings, and contains the germ not found in the middlings or left as a part of the flour.  The quantity produced, 2 lb. from a bushel of wheat, is very small and rarely kept separate from the bran.  The following shows the analysis: 

Lb. per Bushel
of Wheat. 
Water.                                   0.282
Ash.                                     0.101
Albuminoids.                             0.349
Woody fiber.                             0.160
Carbo-hydrates (starchy matters).        1.088
Fat.                                     0.099

BRAN.

Bran, the outer coating of the wheat, contains twice or three times as much fiber as does either of the other products from wheat, and proportionately less of each of the other ingredients except ash, which is greater, perhaps partly due to foreign matter adhering to the kernel.  The following analysis shows the amount of constituents removed by the bran (10 lb.) from one bushel of wheat: 

Lb. per Bushel
of Wheat. 
Water.                                   1.459
Ash.                                     0.506
Albuminoids.                             1.416
Woody fiber.                             1.000
Carbo-hydrates (starchy matters).        5.277
Ash.                                     0.342

From the foregoing milling products obtained from one bushel of wheat of 60 lb. in weight, the ash on analysis gave the following constituents, which shows the amount that was abstracted from the soil by its growth: 

_____________________________________________________
|
CONSTITUENTS FROM ONE BUSHEL OF WHEAT.             |
_____________________________________________________|
|         |          |         |         |
|Nitrogen.|Phosphoric| Potash. |  Lime.  |
|         |  Acid.   |         |         |
|         |          |         |         |
+---------+----------+---------+---------+
|         |          |         |         |
Flour.      |  0.739  |  0.092   |  0.054  |  0.013  |
Middlings.  |  0.105  |  0.064   |  0.024  |  0.002  |