Abstract :
Summary form only given, as follows. W.G. Cady has brought to the attention of the editors the following corrections to his paper "Bibliography on Piezo-Electricity" which appeared in the April, 1928, issue of the PROCEEDINGS, on pages 521 to 535. Page 522, line 17. For Corning, New York, read Minneapolis, Minn.; Page 524, No. 71. For Gieger read Geiger.; Page 526, No. 112. For November, 1927, read November and December, 1927; Page 527, No. 142. For Morecroft, J.M., read Morecroft, J.H.; Page 528, No. 167. For Widemann\´s read Wiedemann\´s; Page 529, No. 211. For (C) read (B); No. 212. For Verbeek, D.C., read Verbeek, C.C.; and Page 531, Patent 1,495,429. For Rochelle read Rochelle salt.