Letter from Joseph John Thomson, to George Howard Darwin, regarding a paper [attributed] 'Tables for the solution of the equation d2y/dx2 + 1/x · dy/dx - (1 + n2/x2) y = 0' by W Steadman Aldis Has read Ernest William Hobson's report [RR/14/4], and agrees that a uniform notation should be used. If the author wishes to use his own introduction this should be done, instead of using Ernest William Hobsons's. Subject: Mathematics [Published in the 'Proceedings of the Royal Society of London'] 3 August 1898