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version of the special type of power series y = a<>x-\-aix't-\-atfc*-}• • • to obtain x as an integral power series in z=y/a0, whose coefficients are given as polynomials in b,= — di/ao, as far as the term involving z13. Now the explicit expansion for (1) in terms of the derivatives of/(z) at z0 can be written down immediately, as far as v =13, from Van Orstrand's expansion on pp. 369-370, merely by (A) replacing b{ in his formula by —/('+1)(z0)/(t + l) !/'(zo), (B) replacing his z by — /(zo)//'(zo), and (C) adding the constant term z0. The truth of the last statement is obvious from the fact that when (1) is applied at the origin it yields Van Orstrand's expansion and from the uniqueness of Van Orstrand's expansion.

A note on the correction of Geiger Müller counter data