A Treatise on the Theory of Bessel Functions

THE memoir in which Bessel, the astronomer, examined in detail the functions which now bear his name was published in 1824, and was the outcome of his earlier researches concerning the expression of the radius vector in planetary motion.A Treatise on the Theory of Bessel FunctionsBy Prof. G. N. Watson. Second edition. Pp. viii + 804. (Cambridge: At the University Press, 1944.) 60s. net.