Referee's report by John Hall Gladstone, on a paper 'Researches on explosives. No. II.—Fired gunpowder' by Andrew Noble and Frederick Augustus Abel Recommended for publication in the 'Philosophical Transactions of the Royal Society'. The paper is a continuation of earlier researches published in the Philosophical Transactions by the same authors. Suggests the addition of a table of contents. Subject: Mathematics, Applied Sciences, Physics and Chemistry [Published in the Philosophical Transactions of the Royal Society, 1880] 15 August 1879