The principles on which these tables are founded, may be depended on, inasmuch as M. Bigot has taken considerable pains on that head; and, consequently, the calculations, which follow, and the proportions, established for the construction of rockets in general, are sufficiently conclusive.

Diameter of the rocket.Height of tools of wood.Diameter of the tools of wood.Dimension of mallets.
Rammers, &c.Rammers.
Name of the Rocket.For charging the head not comprised.
Exterior.Interior.Roller.123Solid 4Pot.Conical head.To run.To charge.Of pots.Sockets of the pot.Base of conical head.Ladle.Diam­eter.Length.
inch.Diam.D.D.D.D.D.D.D.D.D.D.D.D.D.inches.inches.
Small Partement,½246⅓45/927/91⅓31⅔7/121⅔1⅔3⅓
Partement,¾idem.1662/9413/2726/27idem.2⅔15/9idem.11/1815/97/915/9idem.3⅓
Marquise,1idem.1261/1247/18225/36idem.2⅓idem.idem.5/6idem.
Double marquisesidem.idem.514/15413/45229/45idem.21/518/15idem.3/518/1513/1518/15idem.
Ditto, for 4 doz.idem.1057/945/27216/27idem.2idem.11/185/6idem.45
Rocket of2idem.95⅜331/36225/7211/6idem.idem.idem.idem.idem.}
Ditto,idem.82/551/15329/4522/912/15idem.idem.19/30idem.9/10idem.idem.}
Ditto,3idem.847/934/921/911/91⅓idem.idem.23/36idem.11/12idem.idem.}6⅔
Ditto,4idem.65/633/32115/1611/811/16idem.idem.31/48idem.15/16idem.idem.}
Ditto,5idem.6343/602133/1801137/18017/609/10idem.idem.13/20idem.14/15idem.idem.}

Diameter of rockets.HEIGHT OFDiameter of the parts of the piercer.
Name of the Rockets.Charged rockets,
Button
Total of the piercer, button
Exterior

Button

Screw at
Exterior.Interior.Empty cases.button,&c. included.Massive Rockets.Piercers.& their cylinder.Culots.and culot, comprised.Screw.Base.of small end.and cylinder.Culot.the base.
inch.Diam.D.D.D.D.D.D.D.D.D.D.D.D.D.
Small partement,½7⅓65/651/31⅔7⅔¼1/611
Partement,¾idem.idem.67/9idem.52/9idem.idem.75/92⅔idem.idem.idem.idem.7/9
Marquise,1idem.77/1267/12idem.51/12idem.idem.71/12idem.idem.idem.idem.
Double marquise of 3 dozidem.767/15idem.414/15idem.11/564/52idem.idem.idem.idem.3/5
Ditto, 4 doz.idem.67/965/18idem.47/9idem.11/1815/6idem.idem.idem.idem.5/9
Rocket of2idem.6⅜5⅞½413/24idem.61/12idem.idem.idem.idem.½
Ditto,idem.61/15517/307/1544/15idem.4/5511/1513/10idem.idem.idem.idem.idem.
Ditto,3idem.57/955/184/94idem.5⅓11/6idem.idem.idem.idem.idem.
Ditto,4idem.473/7611/24315/32idem.½461/9615/16idem.idem.idem.idem.5/12
Ditto,5idem.443/60413/609/20214/15idem.2/544/5idem.idem.idem.idem.2/5

Note. The rockets of two inches, and those between that and three inches, require to be beaten with four rammers, independently of that which is solid; and also those above three inches, require five. The rolling board should be sufficiently large for the cases we wish to form; viz. one of twenty-eight inches in length, and six inches in breadth for small rockets; one of thirty inches in length, and ten inches in breadth for middlesized rockets; and one of thirty-six inches by eighteen for the largest rockets.

(TABLE I: Part 1 of 3)

Diameter of the rocket.Height of tools of wood.
Rammers, &c.
Name of the Rocket.For charging the head not comprised.
Exterior.Interior.Roller.123Solid 4
inch.Diam.D.D.D.D.D.
Small Partement,½246⅓45/927/91⅓
Partement,¾idem.1662/9413/2726/27idem.
Marquise,1idem.1261/1247/18225/36idem.
Double marquisesidem.idem.514/15413/45229/45idem.
Ditto, for 4 doz.idem.1057/945/27216/27idem.
Rocket of2idem.95⅜331/36225/7211/6
Ditto,idem.82/551/15329/4522/912/15
Ditto,3idem.847/934/921/911/9
Ditto,4idem.65/633/32115/161⅛
Ditto,5idem.6343/602133/1801137/18017/60

(TABLE I: Part 2 of 3)

Diameter of the rocket.Height of tools of wood.Diameter of the tools of wood.
Rammers.
Name of the Rocket.
Sockets
Exterior.Interior.Pot.Conical head.To run.To charge.Of pots.of the pot.
inch.Diam.D.D.D.D.D.D.
Small Partement,½31⅔7/121⅔
Partement,¾idem.2⅔15/9idem.11/1815/97/9
Marquise,1idem.2⅓idem.idem.5/6
Double marquisesidem.21/518/15idem.3/518/1513/15
Ditto, for 4 doz.idem.2idem.11/185/6
Rocket of2idem.idem.idem.idem.
Ditto,idem.idem.idem.19/30idem.9/10
Ditto,3idem.1⅓idem.idem.23/36idem.11/12
Ditto,4idem.11/16idem.idem.31/48idem.15/16
Ditto,5idem.9/10idem.idem.13/20idem.14/15