Helium. The empire of the grandfather of Dejah Thoris.
Holy Therns. A Martian religious cult.
Hortan Gur. Jeddak of Torquas.
Hor Vastus. Padwar in the navy of Helium.
Horz. Deserted city; Barsoomian Greenwich.
Illall. A city of Okar.
Iss. River of Death. (See A PRINCESS OF MARS.)
Issus. Goddess of Death, whose abode is upon the banks of the Lost Sea of Korus. (See THE GODS OF MARS.)
Jav. A Lotharian.
Jed. King.