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Scientific American, Vol. 92, No. 13 (1905) (1905)

leaf 7

An illustration from Scientific American, Vol. 92, No. 13 (1905), 1905, leaf 7
sits of rock salt found in boundary is upon a slough flowing from the bay. As entire plant presents to the observer a miniature the tide rises, twelve gates ‘are opened and allow the various localities in the vast region west of the Rocky Netherlands with the distant ships on the bay appear- sea… … States is Alvarado, a town salt ponds where it is ex- Gathering Salt From Settling Pond. of Alameda County and 20 posed to the fierce heat of miles from San Francisco. At this point, which lies the sun, and in about twenty days the salt is deposited of this low, half-drowned district, covered for…

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