A polygonal barn has the disadvantages of both the rectangular and the round barn, and is less stable than either. It must necessarily have a heavy frame, which is expensive, and as the siding cannot run around the corners, it is very difficult to tie the different sides together sufficiently to prevent the barn being racked by the wind. BARN NO. 6 16-sided. Built, 1888. [Illustration: FIG. 41. BARN NO. 6; 85 FEET IN DIAMETER; SAME SCALE AS DRAWING ON OPPOSITE PAGE.] Diameter, 85 feet. Height, 26-foot posts on 9-foot wall. Capacity, 88 cows; 350 tons of hay. Foundation and first story, cement wall 9 feet above cement floor. Supports, 4 × 8s, placed just back of stanchions, 3 feet on center. Studs, 2 × 10s, 26 feet long, placed 2-1/2 feet on center. Joists 3 × 12s, 20 feet long, 14 inches on center for main span. Rafters, self-supporting. Sheathed with 1 × 6s with no space between. This roof has a purline plate thrown in the gambrel. The plate is supported only by the braces which tie the joints. [Illustration: FIG. 42. ARRANGEMENT OF COW STABLE IN BARN NO. 6.] The barn has been racked three times by the wind, replumbed and heavy iron rods put in to brace it, yet it is out of plumb at the present time. CONCLUSIONS In summing up the data given in this bulletin, it is obvious that the advantages of the round barn are convenience, strength, and cheapness. The round barn is the more convenient, because of the unobstructed mow, which reduces the labor required in mowing hay, and because of the greater ease and fewer steps with which the feed can be gotten to the cows, owing to the central location of the supply. The circular construction is the strongest because advantage is taken of the lineal strength of the lumber. All exposed surfaces are circular, and withstand greater wind pressure, as the wind can get no direct hold, as on the sides or gable ends of a rectangular barn. In round numbers, rectangular barns require, according to their construction, from 34 to 58 percent more in cost of material than round barns with the same floor area and built of the same grade of material. * * * * * TRANSCRIBER NOTES: Punctuation has been normalized without note. Hyphenation of words has been changed to be more consistent throughout the text. Page 6: "betwen" changed to "between" (midway between the silo and the outside wall).