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deposits. He claims that these animals which were unable to endure cold weather were either summer visitors during the severity of the glacial period or permanent residents when the country had a milder climate. But Gardner maintains that these animals came from inside the earth for the following reason: "Since the reindeer, lion and hyena are present day forms of life and not as old as the mammoth (at least in the form in which we know them today and in which these remains show them to have been when they were alive), it is evident that these animals visited the spots where their remains were found not from southerly climates during early glacial epochs, but that they are remains of visitors from the land of the interior. Otherwise these present day forms would not be found alongside those of the mammoth which we have shown to be a present day inhabitant of the interior of the earth. Not knowing this, Mr. Cook has great difficulty in explaining the occurrence together of these forms which in his view are earlier and later forms of life. But when we shall see that they are really contemporaneous (and both came from the interior of the earth), the difficulty vanishes." In the stomach of the mammoth was found undigested food consisting of young shoots of pine and fir and young fir cones. In others are found fern and tropical vegetation. How could an Arctic animal have tropical food in its stomach? One explanation is that the Arctic region once had a tropical climate, and that a shift of the earth on its axis suddenly brought on the Ice Age and changed the climate be 2 Geter we to a frigid one. This theory has been offered to explain both the tropical vegetation in the stomach of frozen Arctic animals and the fact that many of these huge animals were of tropical species, related to elephants. Great deposits of elephant tusks were found in Siberia as evidence of the then northern habitat of tropical animals. But there is another theory to explain these facts: that these tropical animals came from the interior of the earth, which has a tropical climate, coming out through the North Polar opening. On reaching the cold exterior with its Arctic climate they froze, since they were unaccustomed to such cold climate. This is the theory held by Ray Palmer, who does not accept the idea that these animals died in prehistoric times as a result of a shifting of the earth on its axis. He says: "True the death must have been sudden, but it was not because the Arctic was previously tropical and suddenly changed to a frigid climate. The sudden Coming of the Ice Age was not the cause of death. The cause of death was Arctic in nature, and could have occurred any time, even recently. Since the Ice Age there were no mammoths in the known world, unless they exist in the mysterious land beyond the Pole, where one of them was actually seen alive by members of the Byrd expedition."