EXPERIMENT STATION BULLETINS. 299 



roller process. It shows that the brans rich in starch will be relatively 

 low in fat; that there is also an inverse variation between the protein 

 and the crude fiber; that no marked variation is to be found in the amount 

 of ash; that there is a considerable variation in the composition of the 

 bran produced by the roller process, but that the relative feeding values of 

 these brans are not widely divergent.' 1 



The first grade bran from Minneapolis was much the coarsest of the 

 three samples and had a distinctly harsher feeling. It was nearly two per 

 cent richer in protein than either of the others, had a smaller content of 

 fat and of crude fiber and a much larger content of starch. These differ- 

 ences in chemical composition would warrant a slight difference in price 

 in favor of the first grade. 



DAIRY BARN. 



During the summer of 1897, a new dairy barn was built to hold a grade 

 herd of thirty cows. The plan outlined by the Board involved the erec- 

 tion of the building at the smallest possible cost consistent with efficiency. 



The barn is rectangular in form, seventy feet long, north and south, 

 and forty-five feet wide east and west. A driving floor ten feet wide runs 

 lengthwise through the center of the barn, connecting doorways at the 

 middle of the north and south ends. Over this driveway a wagon is 

 driven to haul out the manure. On each side of this center driveway is 

 a gutter sixteen inches wide, four inches deep at the north end of the barn 

 and six inches deep at the south end. The floors on each side of the 

 gutter lap over it, so that liquids falling on them are compelled to escape 

 into the gutter. The bottom and sides of the gutters are two-inch plank, 

 jointed and fitted together water tight. 



Running along the edge of each gutter farthest from the center of the 

 driveway is a stone wall upon wdiich stands a row of posts which serve a 

 twofold purpose. They sustain the weight of the hay mow and at the 

 same time serve as the rearmost post of the partitions between the cows. 

 These posts stand upon a two by six hemlock plank which rests upon 

 the wall. The gutter side is spiked to this plank so that the post is two 

 inches in from the edge of the gutter. The spaces between the foundation 

 walls were filled with sand and the floors placed directly upon this sand 

 with no joists except two by four or two by six strips to which the floor 

 plank could be nailed to hold them in place. The floors are level except 

 that of the center drivewa}' which is arched one inch in the middle to 

 compel any water that falls upon it to run quickly into the gutters. The 

 floors are of first class hemlock plank, jointed and dressed on one side. 



From the edge of the gutter to the side of the barn is 16 feet making 

 feeding alleys in front of the cows eight feet wide, allowing for an 

 abundant circulation of air and giving plenty of room for convenience in 

 feeding. 



The milk and wash rooms are in the northwest corner of the barn and 

 are. together, 16 feet by 8 feet, running from flu- gutter to the west side 



