One other memory remains with me of this wonderful day, and with it I will close this letter. The two professors, their tempers aggravated no doubt by their injuries, had fallen out as to whether our assailants were of the genus pterodactylus or dimorphodon , and high words had ensued. To avoid their wrangling I moved some little way apart, and was seated smoking upon the trunk of a fallen tree, when Lord John strolled over in my direction.

“I say, Malone,” said he, “do you remember that place where those beasts were?”

“Very clearly.”

“A sort of volcanic pit, was it not?”

“Exactly,” said I.

“Did you notice the soil?”