We summarize the 194 far-infrared lasing lines of hydrazine: 7 new lines, 144 lines that we reported recently, and 43 lines reported by other authors. Fewer than 5% of the 43 previously reported lines had wavelengths shorter than 200 mu m, but 82% of our 134 lines (127 and 7 new), discovered in cw (CO2)-C-12-O-16-laser-pumped hydrazine, were shorter than 200 mu m; the shortest was at 49.2 mu m Of the 194 lines now known in hydrazine, 150 have been frequency measured. We present the pump line, the pump offset from the CO2 line center, the far-infrared wavelength and frequency, the optimum pressure, the relative intensity, and the relative polarization of each line. (C) 1998 Optical Society of America.15718391849