Howe, Herbert A. (Herbert Alonzo), 1858-1926 · Meadville, Penna., Flood and Vincent · leaf 250
. There is one dark spot called Lacus Solis, the Lake LacusSoiis.of the Sun, which is every op-It is sur- plain atposition rounded by a brightring, which, accord-ing to our previoustheorizing, is dryland. Sometimesthe ring is wide andconspicuous; atothers it is narrowand not easily seen.A large… … Fig. 114.—Canals Connected with LacusSolis. lake with the ocean, ring ; at other times ing, which then looks portion of the original lake and the sea are ap- A horse-shoe. 244 A Study of the Sky. The canals fill. Varioustheories. Irrigation. parently joined. If the land separating the lake fromthe…
Astronomy
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