ins air
enough for the use of its passengers for a quarter of an hour, and there
is rarely occupied more than a period of two or three minutes to pass it
through the surf to the shore.

[5] Areas being as the squares of homologous lines, the ratio would be,
mathematically expressed, 1 squared: 4 x 12 squared = 1: 4 x 144 = 1: 576.

[6] There are nine of these presses in the printing-rooms of Harper and
Brothers, all constantly employed in smoothing sheets of paper after the
printing. The sheets of paper to be pressed are placed between sheets of
very smooth and thin, but _hard_ pasteboard, until a pile is made
several feet high, and containing sometimes two thousand sheets of
paper, and then the hydraulic pressure is applied. These presses cost,
each, from twelve to fifteen hundred dollars.

[7] The principle on which these life-boats are made is found equally
advantageous in its application to boats intended for other purposes.
For a gentleman's pleasure-grounds, for example, how great the
convenience of having a boat which is always stanch and tight--which no
exposure to the sun can make leaky, which no wet can rot, and no neglect
impair. And so in all other cases where boats are required for
situations or used where they will be exposed to hard usage of any kind,
whether from natural causes or the neglect or inattention of those in
charge of them, this material seems far superior to any other.

[8] Continued from the June Number.

[9] Continued from the June Number.

[10] Continued from the June Number.

[11] Transactions of the Zoological Society.

[12] Josephine might afterward have fulfilled this promise, had not
Madame d'Aiguillon been a divorced wife, which excluded her from holding
any situation about the Empress.

[13] Continued from the June Number.

End of the Project Gutenberg EBook of Harper's New Monthly Magazine, Vol. 3,
July, 1851, by Various

*** END OF THIS PROJECT GUTENBERG EBOOK HARPER'S NEW MONTHLY ***

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