Above me hung another world. I could look at its moun-tains andvalleys, oceans, lakes, and rivers, its broad, grassy plains anddense forests. But too great was the distance and too deep theshadow of its under side for me to distinguish any movement as ofanimal life.

Instantly a great curiosity was awakened within me. The questionswhich the sight of this planet, so tanta-lizingly close, raised inmy mind were numerous and unanswerable.

Was it inhabited?

If so, by what manner and form of creature?

Were its people as relatively diminutive as their little world, orwere they as disproportionately huge as the lesser attraction ofgravity upon the surface of their globe would permit of their being?

As I watched it, I saw that it was revolving upon an axis that layparallel to the surface of Pellucidar, so that during each revolutionits entire surface was once ex-posed to the world somewhat below and oncebathed in the heat of the great sun above. The little world hadthat which Pellucidar could not have--a day and night, and--greatestof boons to one outer-earthly born--time.