“You must know, to begin with, that this greatest natural curiosity on the face of our planet is no common meteorite such as you are acquainted with. Indeed, if it had struck the earth as fair a blow as it did us I think the shock would have been felt much more severely by your little race, for it is hundreds of miles in diameter and the velocity with which it was traveling was simply incredible. Fortunately it fell upon an uninhabited plain, partly burying itself in the ground, and for several years the mass was so hot that it could not be approached. This helped to make it an object of awe and almost of veneration, so that many centuries of time passed before any critical examination was made of it. Even then nothing was accomplished toward revealing its marvelous secrets. The surface was found to be hard and metallic, with the familiar burned appearance caused by contact with the atmosphere, and the substance, in its chemical composition, resembled, with some variation, other meteoric specimens. Some attempt was made to penetrate into the interior of the mass, but all that was discovered led to the belief that it was of similar structure throughout. “This was the extent of the knowledge obtained of the interesting object until the beginning of the present age of advanced civilization. “When we had learned by our successful experiments that some of our sister planets were inhabited, and when our powerful telescopes had revealed what we believed to be planets of other systems, there was intense interest in the search for any evidence of life in these more distant worlds. They were so very far away that we doubted if we could ever know enough about them to tell whether they were habitable, and it seemed as if we could only judge of their condition from analogy with our own solar system. These views prevailed until the brilliant suggestion was made, and it is not known by whom it was first advanced, that perhaps we had, right here with us, the means of discovering what we so much desired to know. It had always been assumed that our comet was of uniform structure, but why let such a matter rest in uncertainty? It is one of the strange things in our history that this question was not seriously asked long before that time. But now that the idea was broached the work was entered into with great earnestness.