Letter from John Viriamu Jones, regarding a paper 'On some expressions for the radial and axial components of the magnetic force in the interior of solenoids of circular cross-section' by Clinton Coleridge Farr The author's proposed changes much shorten the treatment of the special cases without meeting the crisicisms of the referees. But as 'the author is clearly indisposed to omit reference to these cases', is of the opinion the proposed changes be accepted. Subject: Mathematics, Physics [Published in the 'Proceedings of the Royal Society of London'] Endorsed on recto as received 8 November 1898. 5 November 1898