Wherever Captain Carter has used Martian measurements of time, distance, weight, and the like I have translated them into as nearly their equivalent in earthly values as is possible. His notes contain many Martian tables, and a great volume of scientific data, but since the International Astronomic Society is at present engaged in classifying, investigating, and verifying this vast fund of remarkable and valuable information, I have felt that it will add nothing to the interest of Captain Carter's story or to the sum total of human knowledge to maintain a strict adherence to the original manuscript in these matters, while it might readily confuse the reader and detract from the interest of the history. For those who may be interested, however, I will explain that the Martian day is a trifle over 24 hours 37 minutes duration (Earth time). This the Martians divide into ten equal parts, commencing the day at about 6 A.M. Earth time. The zodes are divided into fifty shorter periods, each of which in turn is composed of 200 brief periods of time, about equivalent to the earthly second. The Barsoomian Table of Time as here given is but a part of the full table appearing in Captain Carter's notes.
TABLE 200 tals . . . . . . . . . 1 xat 50 xats . . . . . . . . . 1 zode 10 zodes . . . . . . . . 1 revolution of Mars upon its axis.
For six long Martian months I had haunted the vicinity of the hateful Temple of the Sun, within whose slow-revolving shaft, far beneath the surface of Mars, my princess lay entombed-- but whether alive or dead I knew not. Had Phaidor's slim blade found that beloved heart? Time only would reveal the truth.
Six hundred and eighty-seven Martian days must come and go before the cell's door would again come opposite the tunnel's end where last I had seen my ever-beautiful Dejah Thoris.
Half of them had passed, or would on the morrow, yet vivid in my memory, obliterating every event that had come before or after, there remained the last scene before the gust of smoke blinded my eyes and the narrow slit that had given me sight of the interior of her cell closed between me and the Princess of Helium for a long Martian year.