The following tables, together with brief discussions of methods of computation and uses, are included: (1) a nine decimal-place table of the incomplete Gamma-function ratio, I(u, p), for p= -0.95(0.05)4 and u at intervals of 0.1; and (2) a six-significant-figure table of the percentage points, corresponding to cumulative probabilities P= .0001, .0005, .001, .005, .01, . 025, .05, .1(.1) .9, .95, .975, .99, .995, .999,. 9995, and .9999, of the chi- square distribution with v = 0.1(0.1) 10 degrees of freedom. Both tables are accurate to within a unit in the last place.

The subject of special functions is rich and expanding continuously with the emergence of new problems encountered in engineering and applied science applications. The development of computational techniques and the rapid growth in computing power have increased the importance of the special functions and their formulae for analytic representations