Message #20013

[Bianca]

174 See the argument of Strato the physicist and the discussion of Strabo in 1.3.4‑5.

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175 That is, 30°.

Thayer's Note: Yes, but only sort of: 30° along the ecliptic. Since outside the equatorial zone, the ecliptic is never perpendicular to the horizon, but tilted — and in temperate latitudes quite low — the Moon, having traveled the extent of one zodiacal sign of 30 degrees, will be much lower than 30° above the horizon. It would have been more accurate, and more to the point, to footnote this as a space of time (roughly 2 hours) rather than angular elevation.

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176 That is, when the sun and moon meet or pass each other in the same degree of the zodiac; and hence at the time of the new moon.

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177 The first quarter.

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178 The third quarter.

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179 That is, from the time of the third quarter on to that of the new moon, the interval of time between high-tide and high-tide (or low-tide and low-tide) increases, the same being also true of the velocity.