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THE SIX FIRST BOOKS,
TO WHICH ARE ADDED,
PLAIN AND SPHERICAL TRIGONOMETRY,
A SYSTEM OF
ELEMENTS OF NATURAL PHILOSOPHY,
AS PAR AS IT RELATES TO ASTRONOMY, ACCORDING TO THE
“ The works of the Lord are great, sought out of all those who have pleasure
J. Robinson, printer,
District of Maryland tv wit z
year of the Independence of the United States of America, Joseph Cush.
ing and Joseph Jewett of the said Distriet have deposited in this Office SEAL.
the title of a Book, the right whereof they claim as Proprietors, iu the
words following ; to wit :“ Euclid's Elements of Geometry, the six first Books. To which are added, Ele"ments of Plain and Spherical Trigonometry, a System of Conick Sections, Elements "S of Natural Philosophy, as far as it relates to Astronomy, according to the Newto" nian System, and Elements of Astronomy : with Notes. By the Rev. Joun ALLEN, “ A. M. Professor of Mathematicks in the University of Maryland.
“ The works of the Lord are great, sought out of all those who have pleasuro as therein.”....Psl. cxi."
In Conformity to the act of Congress of the United States, entitled, “ An act for the encouragenent 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 the 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 proprietors of such copies during the times therein mentioned,'? and ex. tending the benefits thereof to the arts of designing, engraving, and etching historical and other prints."