200 of Projectiles*
ig5. Many practical inferences may be deduced from thistable:
1. Guns of the common length loaded with the me-dium charge should be elevated half a degree above thehorizon to range 340 yards, and 1 0 20' to range 680yaids ; the elevation mud be greatly increased to range1000 yards. The less the calibre of the gun is, thehigher must be the elevation.
2. The elevation of short guns fired with the lesscharges must be greater than of guns of the commonlength to range the fame distance.
3. If a short 4 pr. loaded With the less charge, range1000 yards, the line of descent is 278 feet; whereforethe shot’s path being a curve of the fourth kind, it willdo much less execution in enfilading troops, than shotfired from guns of the common length whose path is acurve of the second kind.
4. The elevation of short guns loaded with the leastcharge increase in the ratio of the distance: thus thecurve described by shot fired from 8 and 4 prs. to thedistance of 1000 yards is of tne fourth kind ; from theangle of incidence they can be of no service in enfilading,and are very uncertain : the angle of incidence ■' 168) atthe distance of 1000 yards being much larger than theangle of elevation, if the (hot fall on soft ground theybury themselves at the first graze.
5. is hot fired from short guns with the least chargesand without wads, which range only 680 yards, alsodescribe a curve of the fourth kind ; they are conse-quently useless in enfilading, and their execution isuncertain.
6. if to these reflections be added the consideration,that in pointing short guns the eye is more easily de-ceived, from the proximity of the two points of sight,than in longer guns ; and that in the latter the angle ofelevation being -less, the angle of incidence is less also;so that the (hot on touching the ground rife and fromtheir richochet are very dangerous : it will be evidentthat to derive from the use of artillery the greatest pos-sible advantages, long guns should ever be preferred toJhort ones of the fame calibre. The good effects result-ing from this will be more fully displayed in the sequel.
196. To