A bibliography of English military books up to 1642 and of ...

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Wherein are set forth exa6lly the Chiefe grounds and principals
of the whole Art, in a very briefe and Compendious
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forme, never by any set forth in the like nature before.
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With divers excellent Conclusions, both Arith- meticall and
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Geometricall belonging there- unto : As also sundry serviceable
Fire- |
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workes, both for Sea and Land service.
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A
Study delightfull and very usefull for men of the best
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Quality,
and imbrac'd by the greatest Princes. Virtus
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Gloriam Paret.
Written by John Roberts of Weston neere
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Bathe, Gentleman,
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Praftitioner and Professor
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in the Arte thereof.
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London:
Printed by. y. Okes, and are to be sold by George Hurlock at
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his shop in Thames-street neere S. Magnus
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Church. 1639.
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Quarto.
Collation. Frontis., woodcut of a cannon.— Tp., A2.—Deds. to Charles I.
and the Earl of Newport, A3-4.— Cts., I22-4.— Diags.—R.H. : "The
Compleat Cannoniere."—Sigs. in 4', A-I.
Copies. B.M.; W.O.
Contents. Roberts goes over much the same ground as the writers on
Artillery already noticed. He gives tables showing names, calibre, weight,
charge, etc., of the various pieces of ordnance used by the English ; a table
of " dead ranges," or distance from platform to first graze, and another table of
" randoms.'' He says, that it had been found by experience that the greatest
range was to be obtained with an elevation of 42° ;
also, that a cannon fired
at a range of 120 paces will pierce a wall or rampart, "meanly settled," 10
or 12 feet, but in close, sandy ground, 20 to 24 feet ; and that, if properly
managed, a cannon may be fired no less than one hundred times a day.
P. 48 contains a mention of ricochet fire, to be used against troops on stony
ground.
141. Sixteen-thirty-eight. Roberts, John.
Great
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Yarmouths
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Exercise. In a very compleat and
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martiall manner per-
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formed by their Artillery men, upon
the twenty
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second of May last,
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to the great
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commendations
and applause of the whole
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modern Discipline of this our Age.
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1638.
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Town, according to the
Non solum
nobis, sed patriae.
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Written
neere Bathe, Gent.
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by lohn Roberts of Weston,
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London, \
Printed by Thomas Harper, and
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