Feeding Experiments. 19 



Black Seeds. — Wheat, oats, barley and flax 17-4 per cent, wild 

 buckwheat 4 • 2 per cent, lamb's quarters 45-4 per cent, wild mustard 

 (140) 2-8 per cent, other mustards 5-6 per cent (hare's-ear mustard 

 180, ball mustard 28, tumbling mustard 544, peppergrass 8, 

 worm-seed mustard 20, western false flax 28, shepherd's purse 8, 

 stinkweed 44), other weed seeds 4-6 per cent (gumweed 18, 

 catchfly 24, dock 2, Russian pigweed 5.2, evening primrose 64, plantain 

 10, prairie sunflower 10, coreopsis 2, mint 2, road-side thistle 2, stick- 

 seed 8, green foxtail 70, cinquefoil 50, fragrant giant hyssop 2, sow 

 thistle 4, Canada thistle 4, western cone-flower 6, American dragon- 

 head 34, wormwood .66, wild oats 6, western rye grass 18, alsike 16, 

 timothy 4, red clover 2), chaff, etc., 20 per ceht. 



MILCH cows. 



Object of Experiment. — To compare a good grain ration with 

 ■complete elevator screenings, with black seeds, and with two of these 

 supplemented by molasses meal in order to increase palatability. 



Plan of Experiment. — Each of the following experiments was 

 conducted in three periods of two weeks each, the necessary cal- 

 culations being made from data collected during the second week of 

 each period. The first week allowed the cows to become accustomed 

 to any change in the ration. By averaging the results of the first and 

 third periods a fair comparison with the intermediate period is 

 possible. 



Exp. I — Meal mixture vs. meal mixture — 2 parts, and 

 complete elevator screenings — 1 part. 



Exp. II — Meal mixture -vs. meal mixture — 2 parts, 

 and black seeds — 1 part. 



Exp. Ill — Meal mixture vs. meal mixture — 2 parts, 

 complete elevator screenings — 2 parts, 

 and Caldwell's molasses meal — 2 parts. 



Exp. IV — Meal mixture vs. meal mixture — 4 parts, 

 and Caldwell's molasses meal— 2 parts. 



Meal mixture — 

 Bran — 4 parts, 

 Gluten feed — 2 parts. 

 Corn meal— 2 parts, 

 Oil cake — 1 part, 

 Cottonseed — 1 part. 



Value of Feeds per Ton — 

 Hay— $7.00 



Roots and ensilage, — $2.00 

 Complete pulverized screenings — $10.00 

 Black seeds— $4.00 

 Caldwell's molasses meal — $34.50 

 Meal mixture^-1-3 cents per pound.. 

 81902— 3i- 



