About three-fourths of the "inner" surface of the earth is land and about one-fourth water. There are numerous rivers of tremendous size, some flowing in a northerly direction and others southerly. Some of these rivers are thirty miles in width, and it is out of these vast waterways, at the extreme northern and southern parts of the "inside" surface of the earth, in regions where low temperatures are experienced, that fresh-water icebergs are formed. They are then pushed out to sea like huge tongues of ice, by the abnormal freshets of turbulent waters that, twice every year, sweep everything before them. We saw innumerable specimens of bird-life no larger than those encountered in the forests of Europe or America. It is well known that during the last few years whole species of birds have quit the earth. A writer in a recent article on this subject says:(19) (19 "Almost every year sees the final extinction of one or more bird species. Out of fourteen varieties of birds found a century since on a single island--the West Indian island of St. Thomas--eight have now to be numbered among the missing.") Is it not possible that these disappearing bird species quit their habitation without, and find an asylum in the "within world"? Whether inland among the mountains, or along the seashore, we found bird life prolific. When they spread their great wings some of the birds appeared to measure thirty feet from tip to tip. They are of great variety and many colors. We were permitted to climb up on the edge of a rock and examine a nest of eggs. There were five in the nest, each of which was at least two feet in length and fifteen inches in diameter. After we had been in the city of Hectea about a week, Professor Galdea took us to an inlet, where we saw thousands of tortoises along the sandy shore. I hesitate to state the size of these great creatures. They were from twenty-five to thirty feet in length, from fifteen to twenty feet in width and fully seven feet in height. When one of them projected its head it had the appearance of some hideous sea monster. The strange conditions "within" are favorable not only for vast meadows of luxuriant grasses, forests of giant trees, and all manner of vegetable life, but wonderful animal life as well. One day we saw a great herd of elephants. There must have been five hundred of these thunder-throated monsters, with their restlessly waving trunks. They were tearing huge boughs from the trees and trampling smaller growth into dust like so much hazel-brush. They would average over 100 feet in length and from 75 to 85 in height.