III of an Oblong Parallelipipedon MNOPQR, whose Breadth Fig. XX: at the End NO is 3.40 Foot, and Depth M N 6.50 Foot, and the Length thereof MP, 16.25 Foot. As 1 : 3.40::6.50 : 22.10 :: 16.25 : 159.12 Foot. Logar.. 3.40 0.531479 Logar. 6.50 0.812913 Logar. 16.25 1.210853 Logar. 359.12 2.555245 The Solidity. . IV. Of a Pyramis STVXN, whose Side of its Base ST, 8ci is Fig.XXI. 1.12 Foot, and Altitude NX 12.ço Foot. As 1 : 1.12 :: 1.12 : 1.25 : } NX:4.30 : 5.39 the Sol. Con. Logar. 1.12 0.049218 Logar. 1.12 0.049218 Logar. 4.30 0.633468 Logar. 5.39 0.731904 the Solid Content, i V. Of a Cone A B CD, whose Diameter BC is 6:12, and Alti. Fig. tude AD 12.90 Foot. XXII. As 7 in 4 (28) : 22: So 6.12 in 6.12 (37.45) : 29.30 The Area of the Circle of the Base. As I : 29.30 : : -S0 -4.30 : 126.00 The Solidity. Logar. 28 1.447058 Logar. 22 1.340422 Logar. 37.45 1:573452 2913874 Logar, 29.30 1.466816 the Area, Logar. 4:30 0.633468 Logar. 126.00 2.100284 the Solidiry. . Fig: XXIII.! Let ABCHGF be the Fruftum of a Square Pyramid, the XXIV. Side of the Square at the Leser end A B, is 1.60. Foot; and there. fore fore the Ares of that Square A BCD is 2.56 Foot: -The Side of Then, 0408240 The Logarithm cf E F G H 5.29 is 0.723455 Their Sum 1.131695 Their half Sum 0.565847 FL53 1.061829 The Log. of į of the Altitude 11.31 1.117271 The Log. of 151.04 2.179100 Which is the Solidiry of the Fruftum ABCDEFGH. In the same manner the Fruftum of a Cone of the fame Altitude, and the Area's of the Circles, at both Ends, the same with the Area's of the Squares, the Solidity of such a Fruftum Cone, will be found to be the same. VIL. Of a Globe or Bullet, whose Diameter is 3.75 Boot. XXV. The Logar.of the Diameter 1.75 0.243038 Multiplied by 3 0.729114 The Logar. of 355 2.550228 Their Sum 3.279342 Logar. of [678 always] Subftra& 2.831229 Rests the Logar. of 2.806 Foot 0.448113 Which is the Solidity of the Bullet.. Fig. ANCILLA C D. ' usually is) deseribed upon Two Round Bodies, called GLOBĖS: . And therefore we shall first trear of them.. C.H.A P. I. Of a material Sphere or Globe ; and of such Circles, Lines and Points, as are described upon it, and that are appen- I. Of the Circles of the Sphere.. gure Heaven, |