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The doctrine of projectiles demonstrated and apply'd to all the most useful problems in practical gunnery : to which is added, the description and use of a new mathematical instrument, together with serveral curious properties of projectiles never before publish'd / by William Starrat
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82 Problems of

39' the lower Elevation, and, R: S,C

Jfi : Jf-. fC= 3 oo 5 ,^Ff£ = CV

2

v--- 3502.5 the Height, also AfFCs=/ 7 J£=497. j. the Sublimity j all whichis obvious from the Figure and Scho-*hum z d.

CASE II,

A Piece whose greatest Randon i§AM ( Fig. 13.) 8000, Quere herRandon at 69°. 21 * y ~CAt y as also,the Height and Sublimity of the Pro-jection.

R:S y i CAt::AM:Am=j 280.the Distance required ; (Cor. 6 . 7 heo.jo.) the rest are found, as per Cafe 1.

CASE III,

The,greatest Randon of a Piece be-ing 13.)-8 000, and Height

^ - ot