. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. / s. 8 BULLETIN 872, U. S. DEPARTMENT OF AGRICULTURE. GOOD CONSTRUCTION. If walls and ceilings are smooth and well painted or whitewashed, they are kept clean more easily, and offer no places for flour to lodge or insects to breed. Rough stone or brick walls (fig. 5), or those made of matched boards (fig. 6) offer many hiding and breeding places. Floors should be of concrete, where this is possible, for board floorings offer shelter, unless unusually well constructed. Floors and walls should be so joined that there is

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. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. / s. 8 BULLETIN 872, U. S. DEPARTMENT OF AGRICULTURE. GOOD CONSTRUCTION. If walls and ceilings are smooth and well painted or whitewashed, they are kept clean more easily, and offer no places for flour to lodge or insects to breed. Rough stone or brick walls (fig. 5), or those made of matched boards (fig. 6) offer many hiding and breeding places. Floors should be of concrete, where this is possible, for board floorings offer shelter, unless unusually well constructed. Floors and walls should be so joined that there is
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. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. / s. 8 BULLETIN 872, U. S. DEPARTMENT OF AGRICULTURE. GOOD CONSTRUCTION. If walls and ceilings are smooth and well painted or whitewashed, they are kept clean more easily, and offer no places for flour to lodge or insects to breed. Rough stone or brick walls (fig. 5), or those made of matched boards (fig. 6) offer many hiding and breeding places. Floors should be of concrete, where this is possible, for board floorings offer shelter, unless unusually well constructed. Floors and walls should be so joined that there is no opportu- nity for accumulations along sides and corners. "Well-cemented basements that are light and dry are an aid. Machinery should be placed high enough to allow frequent and thor- ough cleaning beneath it. Where practicable the bottoms of flour conveyors should be of metal and rounded, so as to permit the least amount of flour or meal to accumulate along the side and at the ends. The hoppers of the rolls should be con- structed of cement and in flour to accumulate in inaccessible. Fig. 4.—Elevator and belt brush for cleaning ele- vators infested by the Mediterranean flour moth. It is made by taking a piece of lj-inch board of same dimensions as elevator cups, fastening bristles to three sides. Side A is fastened to elevator belt with flat-headed bolts running through board, as shown at BB, the bolts being | or g inch. Bristles on sides CC should be 1-inch long, but those at D should be longer, so that a good brushing to outside of elevator may be secured. Such a brush can be made to fit any elevator. (Chittenden.) such manner as to allow no places. USE OF LIME. A liberal use of air-slaked lime in dark corners of damp basements will not only serve as a repellent to insects, but will also tend to destroy some of the objectionable odors and sweeten the air. CARE OF SACKS AND BAGS. New sacks and bags should not be stored in packing rooms or in anj7 place where they be

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