Victor Appleton, Tom Swift and His Air Glider (1912)
“ This is where we found the platinum!" "Bless my soul!" cried Mr. Damon. "Where is it, in the lake?" "The mine itself is just beyond that barrier of broken and twisted trees," replied the elder Russian brother. "It is an irregular opening in the ground, as though once, centuries ago, an ancient people tried to get out the precious metal. We will go to it at once." "But it is getting late," objected Ned. "No matter," said Tom. "If we find any platinum we'll stay here all night, and longer if necessary to get a good supply. This is better than the city of gold, for we're in the open." ”
