Referee's report by George Busk, on a paper 'Observations on the ovum of osseous fishes' by William Henry Ransom Recommended for publication in the 'Philosophical Transactions of the Royal Society'. The paper is a completion of an earlier commitment to publish his full researches. Some parts of the paper covers subjects which have become familiar in the intervening years. Refers to work of Bruch [?], Reichert [?], Allen Thomson, Karl Ernst von Baer and Dagere [?]. Suggests clarifying some of the discussion. Subject: Zoology, Physiology [Published in the Philosophical Transactions of the Royal Society] 10 December 1866