lights and shades of another world to differ from those of our world; its beasts, its blooms, and its birds are not those of the jungle of Kudu, the sun.

Because of these differences Tarzan loved to investigate the jungle by night. Not only was the life another life; but it was richer in numbers and in romance; it was richer in dangers, too, and to Tarzan of the Apes danger was the spice of life. And the noises of the jungle night—the roar of the lion, the scream of the leopard, the hideous laughter of Dango, the hyena, were music to the ears of the ape-man.

The soft padding of unseen feet, the rustling of leaves and grasses to the passage of fierce beasts, the sheen of opalesque eyes flaming through the dark, the million sounds which proclaimed the teeming life that one might hear and scent, though seldom see, constituted the appeal of the nocturnal jungle to Tarzan.

Tonight he had swung a wide circle—toward the east first and then toward the south, and now he was rounding back again into the north. His eyes, his ears and his keen nostrils were ever on the alert. Mingled with the sounds he knew, there were strange sounds—weird sounds which he never heard until after Kudu had sought his lair below the far edge of the big water—sounds which belonged to Goro, the moon and to the mysterious period of Goro's supremacy. These sounds often caused Tarzan pro-