( 5 «, )

Ovi a fit Plätform Place and Point the Gun at a Mark as large as the Bull-iet, tome 5-0, 60, or more Yards distant, ib as the underside of the Markmay be in the fame Level or Line with the underside of-the Cylinder of thePexe. Then bteween the Gun and-.the Mark at convenient Distances, placepieces of Canvas, Sheets of Paper pastcd together, or the like, upon stakesfixt in the ground,' so as the underside, being Level with the Horizon, mayjtist touch the Visual Line, that pasteth srom the Eye to the upperside of theMark, when the Eye is placed in the Line, that pasteth from it to the upper sideof the Cylinder of the6«»; the Canvas being sobroad and long, that if the Bulletpals through it x or 3 Foot higher than the Level of the Mark, or of eitherband, the Hole it makes may make it known, how much it Flieth higherthan the Level of that Place. If the Bullet falls Lowev than the Mark, and-'touch not the Canvas, the Gun may be next time Raifod a iittle, and so ontill the. Bullet Hitthe Mark, or as High as it. If it fall as High as the Markand Cut the Canvas, the Mark and Canvas may be brought nearer the Gun •Butif it fall as High as the Mark and do not Cut the Canvas,. the Markmay be removed to greater and greater Distances.

If this way of Experiment be made for further Distances and jRaisings ofthe Piccc, as High as convemently may be a bove the Level, and the Distancesmeasored, and then ali Rymdcms above these likewife tried and measored, theDistance of an Object, to be Slrot at, being known, and other necestary Cau-tioris, beneath to be mentioned, carefully observed, good Gunncrs may withgreat Confidente undertafce to Hir the Mark be the Distance what it will, sorf cxceed not the Reach of the Gun.

X. To Ignow vehat Quantity of Pdwder is the just Charge: of auy Pecce,- fo as itmakfth the fartheß Shot, and Fires totally.

1. Raife the Gun to a mean Random, as of io°, or ay°, and Shoot withthe Ordinary Charge of Powdcr, in some convenient Ground wliere the Fall ofthe Bullet may be easily (een, and having made a Shot, meature the Distanceswith a Chain, between the Hole made by the Bullet, and,the Mu^le of theGun.

x. Then, instead of a Füll Charge of P ovo der u(ed in the first, Shot, take7« part leis, or forne soch Proportion, for the next Trial, doing ali tliingselfe as before.

3. For a third, fourth, or more TriaLs, diritinisli still the Quantity ofPowder by 7^ at a time, till the Shot be considerably (horter than at first.

4. Then take 7z more than the first Charge, and do ali things elfo as be-fore, and so continue more Trials, increasing stili the Quantity of Powder iathe fame Proportion every new Trial, till you find the lncreafe of thcCharg^.docs not make the Pcccc Shoot further: Only Over-charge not so . far as to-en-danger the Gun-

5. Three or rrr.re Shot are to be made with every different Charge, and at.every several T rial that the Certainty may the better appear.

6. The First Shot being Measored and Marked, the rest may all be Mea-».sured from it, or from onc another to fave Labour.

7. The