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THE

Mathematical Companion

FOR THE YEAR 1798;

CONTAINING

NEW ENIGMAS, REBUSES, CHIARADES,

QUERIES, & QUESTIONS,

PROPOSED TO BE ANSWERED NEXT YEAR:

LIKEWISE

SOME USEFUL PAPERS

FROM THE

TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON,

&c.

THE SECOND EDITION.

THE DIAGRAMS ENGRAVED BY BERRYMAX.

LONDON:

Printed by W. Mason, Spa Fields,
FOR ANNE DAVIS, 2, ALBION BUILDINGS, ALDERSGATE STREET ;
Sold also by Sherwood and Co, and W. Baynes, Paternoster Row ;

J. S. Dickson, 18, Ivy Lane, Paternoster Row; J. Nunn, Great
Queen Street, Lincoln's Inn Fields; and Lackington, Allest,
and Co. Finsbury Square.

1809.

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GoGost 2459) 5V THE EDITOR'S ADDRESS.

It may appear a matter of surprise to the generality of our mathematical readers, that a work of this kind should make its appearance in the world, under the title of A Companion to the Gentleman's Diary, or a preparative to such, without its being conducted by the learned Editor of that celebrated work; but when we consider that the Problems proposed in that valuable performance, are, for the most part, calculated for adepts in the Mathematical Science, and not for young Tyros, it may in some measure plead our excuse for ushering into the world this our present publication, and more especially as we understand that the Editor of the said Diary has been solicited, some time ago, to publish a Companion to it, which he has not taken any notice of. However, suffice it to say, we are not actuated in our undertaking by a spirit of opposition, but merely to promote the study of mathematical knowledge.

The following papers, which we present to our readers, are from the Philosophical Transactions, and we make no doubt but they will be acceptable, and that their utility will sufliciently apologize for their being inserted.

We return our unfeigned acknowledgments to those gentlemen who have been encouragers of this work, and beg leave to solicit a continuance of their correspondence, assuring them, that by a strict attention to whatever may be communicated to us, and a determined resolution to steer clear of all partiality, we latter ourselves to merit their future favours.

Number II. will be published on November 20, 1798; and all letters for its use must come to hand by June 1, directed for the Editors of a Companion to the Gentleman's Diary, to be left at Mr. Baynes's, No.54, Paternoster Row, London, and they must be franked or post-paid, or they will not be received. And along with all Enigmas, Rebuses, Charades, Queries, and Questions, must be sent their Solutions.

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