Correction [to "An analysis of a piezo-electric oscillator circuit," by L.P. Wheeler, ibid., Apr, 1931, pp 641]

The author has brought to the attention of the editorial staff of the Proceedings the following corrections to his paper, "An Analysis of a Piezo-Electric Oscillator Circuit," which appeared on page 641 of the April, 1931, issue of the Proceedings. In equations (31) and (32) the factor "R_e/L_e" is corrected. This error, which unfortunately was not discovered until after the proof had been returned to the printer, modifies the conclusions reached in the paper in the following particulars: 1. The magnitude of the correction term σ becomes of the order 10^-1 instead of 10^-13, and hence cannot be neglected. When it is taken into account, H_o is not independent of y and it is found that the region in which an effective v_{o2,/sub>/Vm exists is further narrowed down. Qualitatively, however, the conclusions reached in the text require no modification. 2. The magnitude of tg θ is not constant-in the region considered and for the example figured is about 0.7 when oscillations begin (with increasing x), and about 0.3 when they cease. Outside of the range of oscillations on either side tg θ has larger values.}