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OF THE NATURAL NUMBERS FROM 1 TO 10.000,
EXTENDED TO SEVEN PLACES BESIDES THE INDEX; AND so
CONTRIVED, THAT THE LOGARITHM MAY BE EASILY
FOUND TO ANY NUMBER BETWEEN I AND

10,000,000.

ALSO,

AN EASY METHOD
OF CONSTRUCTING A TABLE OF LOGARITHMS, TOGETHER
WITI THEIR NUMEROUS AND IMPORTANT USES

IN THE MORE DIFFICULT PARTS OF

ARITHMETICK,

TO WHICH ARE ADDED A NUMBER OF

ASTRONOMICAL TABLES,

SY WHICH THE DIFFERENT PHASES OF THE MOON, THE
TIMES OF HER OPPOSITION AND CONJUNCTION, MAY
BE COMPUTED WITH THE GREATEST EASE AND
EXACTNESS : AND AN EASY METHOD

OF CALCULATING

SOLAR AND LUNAR ECLIPSES ;

ILLUSTRATED WITH

GEOMETRICAL PROJECTIONS:

DESIGNED FOR THE INSTRUCTION OF YOUTH IN THE

SCHOOLS AND ACADEMIES

OF NEW ENGLAND,

BY ELIJAH HINSDALE BURRITT.

: WILLIAMSBURGH:
PRINTED BY EPHRAIM WHITMAN.

1818.

5

DISTRICT OF MASSACHUSETTS, TO IT :

District Clerk's Office. BE IT REMEMBERED, That on the fifteenth day of September, A. D. 1818, and in the forty-third year of the Independence of the United States of America, ELIJAH HINSDALE BURRITT, of the said district, has deposited in this office the title of a book, the right whereof he claims as author, in the words following, to wit:

Logarithmick Arithmetick, containing a new and correct Table of Logarithms of the natural numbers from 1 to 10,000, extended to seven places besides the index ; and so contrived, that the Logarithm may be easily found to any number between 1 and 10,000,000. Also, an easy method of constructing a Table of Logarithms, together with their numerous and important uses in the more difficult parts of Arithmetick. To which are added a number of Astronomical Tables, by which the different phases of the Moon, the times of her opposition and conjunction, may be computed with the greatest ease and exactness : and an easy metbod of calculating Solar and Lunar Eclipses ; illustrated with Geometrical Projections : Designed for the instruction of Youth in the Schools and Academies of New England. By ELIJAH HINSDALE BURRITT.

In conformity to the act of the congress of the United States, entiiled, “ An act for the encouragemeut of learning, by securing the copies of maps, charts and books, to the authors and proprietors of such copies, during the times therein mentioned :" and also to an act entitled, “ An act supplementary to an act, entitled, an act for the encouragement of learning, by securing the copies of maps, charts and books, to the authors and proprictors of such copies during the times therein mentioned; and extending the benefits thereof to the arts of designing, engraving and etching historical, and other prints.” JOIN W. DAVIS,

Clerk of the District of Nlassachusetts,

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