A TREATISE of the Nature and Arithmetic of Another of the ELEMENTS of Plane and Spherical A PREFACE, fhewing the Ufefulness and Excel- By Doctor JOHN KEILL, F. R. S. and late The Whole Revifed; where deficient, Supplied; where ManyFaults committed by Dr.HARRIS, Mr.CASWELL, An ample Account of which may be seen in the PREFACE By SAMUEL CUNN. The TWELFTH EDITION, Carefully Revised and Corrected. To which is fubjoined an APPENDIX, containing the LONDON: Printed for W. STRAHAN, JF. and RIVINGTON, T. LONGMAN, B. LAW, T. CADELL, E. JOHNSTON, MDCC LXXXII. |