[51.] PROBLEM X.

[52.] PROBLEM XI.

[53.] PROBLEM XII.

[54.] PROBLEM XIII.

[55.] PROBLEM XIV.

[56.] PROBLEM XV.

[57.] Synopſis of the PROBLEMS.

[58.] THE TWO BOOKS OF APOLLONIUS PERGÆUS, CONCERNING DETERMINATE SECTION, As they have been Reſtored by WILLEBRORDUS SNELLIUS. By JOHN LAWSON, B. D. Rector of Swanſcombe, Kent. TO WHICH ARE ADDED, THE SAME TWO BOOKS, BY WILLIAM WALES, BEING AN ENTIRE NEW WORK. LONDON: Printed by G. BIGG, Succeſſor to D. LEACH. And ſold by B. White, in Fleet-Street; L. Davis, in Holborne; J. Nourse, in the Strand; and T. Payne, near the Mews-Gate. MDCC LXXII.

[59.] ADVERTISEMENT.

[60.] EXTRACT from PAPPUS's Preface to his Seventh Book in Dr. HALLEY's Tranſlation. DE SECTIONE DETERMINATA II.

[61.] THE PREFACE.

[62.] PROBLEMS CONCERNING DETERMINATE SECTION. PROBLEM I.

[63.] LEMMA I.

[64.] LEMMA II.

[65.] LEMMA III.

[66.] PROBLEM II.

[67.] LEMMA IV.

[68.] LEMMA V.

[69.] PROBLEM III.

[70.] PROBLEM IV.

[71.] DETERMINATE SECTION. BOOK I. PROBLEM I. (Fig. 1.)

[72.] PROBLEM II. (Fig. 2 and 3.)

[73.] PROBLEM III. (Fig. 4. and 5.)

[74.] PROBLEM IV. (Fig. 6. 7. and 8.)

[75.] PROBLEM V. (Fig. 9. 10. 11. 12. 13. 14. 15. 16.)

[76.] PROBLEM VI. (Fig. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26.)

[77.] THE END OF BOOK I.

[78.] DETERMINATE SECTION. BOOK II. LEMMA I.

[79.] LEMMA II.

[80.] LEMMA III.