Referee's report by Robert Willis, on a paper 'On the mechanical description of curves' by William Henry Leighton Russell Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. Considers that the illustrations are not worth the cost. Does not consider himself knowledgeable on the subject from an analytical standpoint, and suggests the paper be referred to someone else, such as Henry Perigal or Joseph Jopling. Subject: Mathematics [Published in the 'Proceedings of the Royal Society of London'] 28 July 1869