'The views and opinions of Brigadier General John Jacob, CB. Aide-decamp to the Queen; Aide-de-camp to the Governor General of India, &c. &c. &c.; late commanding in chief the British forces in Persia; at present commanding the Sind Irregular Horse, and Political Superintendent of the North-West frontier of Sind.' [‎245] (276/481)

245
butt invariably burst with full effect; and practice was
made by the many officers who attended, at distances
which could not have been attained with any other known
missile.
6. The result was convincing—that, before a small
body of marksmen armed with such weapons, no battery of
artillery could long hold its ground. A box filled with
powder was exploded by a shell fired at 300 yards, and
from the effect of the shells on the butt, it was evident that
the same result would have been attained at the greatest
range from which practice was made, viz. 1200 yards; for
the shells on exploding at such distances tore out large
fragments of the wall. Unfortunately, at this practice, the
wind was very high, with much dust.
7. The expectation formed of these shells by Lieutenant
Colonel Jacob, and his experiments with them, as shown
in the accompanying report, are fully borne out by the
practice made at Bombay; and the result of six shots fired
by Colonel Green and Major Woosnam at 1000 yards is
shown in the annexed diagram.
8. The accuracy of flight attained by projectiles of the
peculiar form on which Lieutenant Colonel Jacob's shells
and balls are cast, has now carried the use of fire-arms far
beyond anything which has come under the notice of
officers in this country, and the experiment made at Bombay
can be attested by the following gentlemen who witnessed
the practice :—
His Excellency Sir Henry Somerset.
Honorable Arthur Malet, Member of Council.
Major General Lester, Commandant of Artillery.
Colonel Green, C.B., Deputy Adjutant General of the
Army.
33