Now, it must be remembered that the Monads cycling round any septenary Chain are divided into seven Classes or Hierarchies, according to their respective stages of evolution, consciousness and merit. Let us follow, then, the order of their appearance on Globe A, in the First Round. The time‐spaces between the appearances of these Hierarchies on any one Globe are so adjusted, that when Class 7, the last, appears on Globe A, Class 1, the first, has just passed on to Globe B; and so on, step by step, all round the Chain. Again, in the Seventh Round of the Lunar Chain, when Class 7, the last, quits Globe A, that Globe, instead of falling asleep, as it had done in previous Rounds, begins to die (to go into its Planetary Pralaya);(285) and in dying it transfers successively, as just said, its principles, or life‐elements and energy, etc., one after the other, to a new laya‐centre, which commences the formation of Globe A of the Earth Chain. A similar process takes place for each of the Globes of the Lunar Chain, one after the other, each forming a fresh Globe of the Earth Chain. Our Moon was the fourth Globe of the series, and was on the same plane of perception as our Earth. But Globe A of the Lunar Chain is not fully “dead,” till the first Monads of the first Class have passed from Globe G or Z, the last of the Lunar Chain, into the Nirvâna which awaits them between the two Chains; and similarly for all the other Globes as stated, each giving birth to the corresponding Globe of the Earth Chain. Further, when Globe A of the new Chain is ready, the first Class or Hierarchy of Monads from the Lunar Chain incarnate upon it in the lowest kingdom, and so on successively. The result of this is, that it is only the first Class of Monads which attains the human state of development during the first Round, since the second Class, on each Globe, arriving later, has not time to reach that stage. Thus the Monads of Class 2 reach the incipient human stage only in the Second Round, and so on up to the middle of the Fourth Round. But at this point—and on this Fourth Round in which the human stage will be _fully_ developed—the “door” into the human kingdom closes; and henceforward the number of “human” Monads, _i.e._, Monads in the human stage of development, is complete. For the Monads which had not reached the human stage by this point, will, owing to the evolution of Humanity itself, find themselves so far behind, that they will reach the human stage only at the close of the Seventh and last Round. They will, therefore, not be men on this Chain, but will form the Humanity of a future Manvantara, and be rewarded by becoming “men” on a higher Chain altogether, thus receiving their Karmic compensation. To this there is _but one solitary exception_, and for very good reasons, of which we shall speak farther on. But this accounts for the difference in the Races.