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In the paper by R. P. Stephenson in the December, 1956, issue (Vol. 11, NO. 4) certain errors occurred.
They are given below together with corrected version.
Page 384, second column:
| Line 38 for R=f(S2) | read R2=f(S2) |
| Line 44 for S1=eax | read S1=epx |
| Line 53 for eaKaA1(l–x) | read eaKaA3(I–x) |
