ARACHNIDES. Mygale arvicolaris Mygale Blenda Eyes of Mygale magnificat Mygale montana Systola thomsoni Dysdera syriaca Atypus seductus Episus liliacea Episus cervicatus Scorpio alce Lycosa tarentula Scorpio scottianus Scorpio laniator Thelyphonius scutator Pterynas lunatus Pterynas testaceus Fig. 1. Fig. 2. Fig. 3. Fig. 4. Fig. 5. Architectural sections of arches, showing the internal structure and support. Fig. 1 shows a simple arch. Fig. 2 shows a double-headed arch. Fig. 3 shows a pointed arch. Fig. 4 shows a pointed arch with a different support. Fig. 5 shows a pointed arch with a different support. Fig. 7. Fig. 6. Architectural section of a pointed arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 7. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 8. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 9. Fig. 9. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 10. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 11. Fig. 11. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 12. Fig. 12. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 13. Fig. 13. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 14. Fig. 14. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 15. Fig. 15. Geometric construction of an arch, showing the internal structure and support. The arch is pointed and has a thick base. Fig. 1. Fig. 2. Fig. 3. Fig. 4. Fig. 5. Figures 1 through 5 show various architectural structures, including arches and vaults, drawn in a perspective view. Fig. 1 shows a series of pointed arches. Fig. 2 shows a series of pointed arches with a different configuration. Fig. 3 shows a series of pointed arches with a different configuration. Fig. 4 shows a series of pointed arches with a different configuration. Fig. 5 shows a series of pointed arches with a different configuration. Fig. 7. Fig. 7. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 8. Fig. 8. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 6. Fig. 6. An architectural drawing of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 9. Fig. 9. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 10. Fig. 10. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 11. Fig. 11. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 12. Fig. 12. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 13. Fig. 13. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 14. Fig. 14. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 15. Fig. 15. A geometric construction of an arch, showing the relationship between the arch and its base. The arch is represented by a curve, and the base is a horizontal line. The construction involves a series of points and lines, including a vertical line and a horizontal line, and a series of points labeled A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. Fig. 1. Fig. 2. Fig. 4. Fig. 3. Fig. 5. Fig. 6. Fig. 7. Fig. 8. Fig. 9. Fig. 10.