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AMERICAN

STATISTICAL ASSOCIATION.

VOLUME I.

NOS. 1-8.

1888-1889.

BOSTON:

W. J. SCHOFIELD, PRINTER, 105 SUMMER STREET,

1889.

COPYRIGHTED, 1889, BY AMERICAN STATISTICAL ASSOCIATION.

Reprinted by the American Statistical Association, 1964, Washington, D. C.

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CONTENTS.

LEADING ARTICLES.

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241

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American Railroad Statistics. Arthur T. Hadley.
Statistics of Municipal Finance. Henry B. Gardner.. 254
Prison Statistics of the United States for 1888. Roland

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An Account of the Collections of the American Statis-
tical Association. Samuel A. Green...
Finance Statistics of the American Commonwealths.

328

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AMERICAN

STATISTICAL ASSOCIATION.

NEW SERIES, No. 1.

MARCH, 1888.

Read before the AMERICAN STATISTICAL ASSOCIATION, Jan. 21, 1887. STATISTICS OF WATER POWER EMPLOYED IN MANUFACTURING IN THE UNITED STATES.

BY PROF. GEORGE F. SWAIN.

It may safely be said that in no country on the globe is there so large an amount of water power employed as in the United States of America. In no country are there so many large developed powers, so many large manufacturing cities which owe their existence to the proximity of available sites, so many instances of large companies developing power at great cost, and selling it to extensive manufacturing concerns like any other commodity. In the engineering problems involved in the development of large powers, as well as in the diverse questions relating to their management, this country has taken the lead. Our engineers have been called upon to advise in the construction of similar works abroad, and foreign engineers have repeatedly sought our shores to gain information on this particular subject.

The water power of the country is not the least important of its natural resources, and its value is probably not realized by most of us. According to the returns of the Tenth Census, there were in use for manufacturing in the United States, in 1880, 55,404 water wheels, using a total

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