Some assert Paradise to be in the seventh heaven; and, indeed, I have found this to be the general opinion of my Muslim friends: but the author above quoted proceeds to describe, next above the seventh heaven, seven seas of light; then, an undefined number of veils, or separations, of different substances, seven of each kind; and then, Paradise, which consists of seven stages, one above another; the first (Dár el-Jelál, or the Mansion of Glory), of white pearls; the second (Dár es-Selám, or the Mansion of Peace), of ruby; the third (Jennet el-Ma-wà, or the Garden of Rest), of green chrysolite; the fourth (Jennet el-Khuld, or the Garden of Eternity), of green[99] coral; the fifth (Jennet en-Na´eem, or the Garden of Delight), of white silver; the sixth (Jennet el-Firdós, or the Garden of Paradise), of red gold; and the seventh (Jennet ´Adn, or the Garden of Perpetual Abode, or of Eden), of large pearls; this last overlooking all the former, and canopied by the Throne of the Compassionate (´Arsh Er-Raḥmán). These several regions of Paradise are described in some traditions as forming so many degrees, or stages, ascended by steps. Though the opinion before mentioned respecting the form of the earth which we inhabit is that generally maintained by the Arabs, there have been, and still are, many philosophical men among this people who have argued that it is a globe, because, as El-Ḳazweenee says, an eclipse of the moon has been observed to happen at different hours of the night in eastern and western countries. Thus we find Ptolemy's measurement of the earth quoted and explained by Ibn-El-Wardee:--The circumference of the earth is 24,000 miles, or 8,000 leagues, the league being three miles; the mile, 3,000 royal cubits; the cubit, three spans; the span, twelve digits; the digit, five barley-corns placed side by side; and the width of the barley-corn, six mule's-hairs. El-Maḳreezee [† 1442] also, among the more intelligent Arabs, describes[100] the globular form of the earth, and its arctic and antarctic regions, with their day of six months, and night of six months, and their frozen waters, etc.