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Scientific American, Vol. 83, No. 14 (1900) (1900)

leaf 3

An illustration from Scientific American, Vol. 83, No. 14 (1900), 1900, leaf 3
their number Greenwich observatories. It works admirably, but it and the length of time elapsed, these islands have fur- INTERIOR OF CAR. nished seven million tons has drawbacks. The cor- rector is heavy and costly. of guano, whose value may be estimated at one billion It absorbs a good deal of… … recting lens, But such an however, on account of the attachment is now found shave of the islands.

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