40. _Face._ See note to Part I. sect. 21. l. 50 (p. 359). The late copies are very incorrect hereabouts. § 6. 9. Mr. Brae well calls attention here to the absurd errors in the printed copies. Thynne has 'in the 320 signe,' and Speght 'in the xxiii signe.' The signs of the zodiac are only twelve, and the one opposite to the 1st is the 7th. § 8. I see no reason for supposing this proposition to be an interpolation, as Mr. Brae suggests. Though similar to § 11, it is not identical with it. Moreover, it occurs in Messahala. § 9. 2. _the chapitre beforn_, i.e. a previous chapter, viz. in sect. 6. The expression supplies no argument for altering the order of the 'conclusions.' 4. _same manere_, i.e. a like manner. The 'vulgar night' clearly means that the quantity of the 'crepuscules' must be _subtracted_ from the 'arch of the night.' § 13. 5. _cours_, course; _heyest cours_, highest point of the path. Late copies have _lyne_; for which Mr. Brae suggested _degre_. § 14. 6. _but 2 degrees_. Suppose the sun's midday altitude is 49°, in latitude 52°. Then the co-latitude is 38°, and the sun's declination 11° North. This corresponds nearly (roughly speaking) to the 1st degrees of Taurus and Virgo. Which is right can 'lightly' be known by the time of year, for the sun cannot be in Virgo if the month be April. Compare sect. 15. § 17. This conclusion, as pointed out in the footnote, is not correct in theory, but can be made nearly so in practice, by taking the two altitudes _very near_ the meridian. This is directly implied in the words 'passeth any-thing the sowth westward,' i.e. passes _ever so little_ westward of the south line; cf. note below to 38. 10. Consequently, the first observation must also be taken very near the meridian. 25. _site_, situation. Late copies, _sight_. This proves that the word _site_ is Chaucerian, and clears up the reading in Ho. Fame, 1114. § 18. Instead of reckoning a star's right ascension by referring it to the equator, it was reckoned by observing the degree of the zodiac which southed along with it. This is expressed in the first 'Table of fixed stars' in MS. Camb. Univ. Lib. Ii. 3. 3 (fol. 70, back) by the phrase 'cum gradibus, quibus celum mediant'; the other co-ordinate of position was the star's declination from the equator, as in the modern method. The ancients also used the co-ordinates of longitude and latitude of a star, the longitude being reckoned along the ecliptic, and the latitude along great circles through the poles of the ecliptic; as appears from the second Table in the same MS. § 19. 6. _equinoxial._ This, as explained in the footnote, should be 'ecliptik'; but I can find no MS. authority for the alteration, though the correction is practically made in l. 13. § 22. 13. _place._ Late copies and old editions, _planet_; absurdly. Latitudes of several places are given in old Latin MSS. They are frequently incorrect.