320 



REPORTS ON THE STATE OF SCIENCE, ETC. 



Tables of G„ (x), Bessel functions of the second kind have been published for 

 various values of n and x in the Reports for 1913 and 1914. 



Dr. Fisher^ has drawn attention to the importance of these derivatives in a 

 recently published paper on the 'Theory of Statistical Estimations.' 



1 Schafheitlin. ' Beziehungen zwischen dem Integrallogarithmus und den 

 Besselschen funktionen.' Sitzungsber Berliner Math. Oesell. vui. Jahrgang, 1909. 



2 P. R. Ansell and R. A. Fisher. 'Note on the numerical evaluation of a Bessel 

 function derivative.' Proc. Land. Math. Soc, vol. xxiv. (1926). 



3 R. A. Fisher. Proc. Camb. Phil. Soc. 22. (1925). 



Bessel Function Derivative, 



8Jv (x) 

 Sv • 



