Chaucer's Works, Volume 3 — The House of Fame; The Legend of Good Women; The Treatise on the Astrolabe; The Sources of the Canterbury Tales

by Geoffrey Chaucer

Fig. 8. Diagram, shewing how to draw the three 'principal circles'; see footnote on p. [183].

Fig. 9. Another form of the 'Rete,' from MS. Ii. 3. 3; cf. Fig. 2. This figure shews the 'Almury' very clearly; Astrol. i. 23.

[Plate V]. Fig. 10. Diagram of the nine spheres; from MS. Camb. Ii. 3. 3. Astrol. i. 17.

Fig. 11. Rough sketch of the position of the 'Rete' in Astrol. ii. 3 (first part). Denticle opposite C, and first point of Aries opposite X; 9 a.m.

Fig. 12. Rough sketch of the position of the 'Rete' in Astrol. ii. 3 (second part). Denticle near O; first point of Aries near H; 8h. 8m. p.m.

Fig. 13. Diagram of the Elevation of the Pole; Astrol. ii. 23. The arc AN is 56°; A′N is 48°; A′P is 4°; and PN is 52°. A, A′ are two positions of the Pole-star.

[Plate VI]. Fig. 14. A 'Table' or disc shewing the twelve astrological 'Houses'; Astrol. ii. 36 and 37.

Fig. 15. Diagram shewing how to ascertain the meridional line from two shadows of an upright gnomon; Astrol. ii. 38.

Fig. 16. Diagram illustrating the use of the Umbra Recta; Astrol. ii. 41, 41a, and 41b.

Fig. 17. Diagram of the use of the Umbra Versa, at two observations; Astrol. ii. 42, 42a, and 42b.