I have spoken only of the class Fishes. But what other class of the animal kingdom will not point us a similar lesson? The Reptiles and Amphibians, to say nothing of the larger Mammals, are also found in countless myriads, packed together as if in natural graveyards. Everybody knows of the enormous numbers and splendid preservation of the great reptiles of the Western and Southern States, untombed by Leidy, Cope and Marsh. One patch of Cretaceous strata in England, the Wealden, has afforded over thirty different species of dinosaurs, crocodiles, and pleisosaurs. Mr. Chas. H. Sternberg, one of Zittel's assistants, recently reported great quantities of Amphibians from the Permian of Texas. They are of all sizes, some frogs being six feet long, others ten. Besides these he found three "bone-beds" full of minute forms an inch or less in length. Of the small ones, which I judge must represent whole millions of young ones =suddenly= entombed, he says: "I got over twenty perfect skulls, many with vertebrae attached, and thousands of small bones from all parts of the skeleton. In one case, a complete skull, one-fourth of an inch in length, had connected with it nearly the entire vertebral column, with ribs in position, coiled upon itself, bedded with many bones of other species in a red silicious matrix. So perfectly were they weathered out that they lay in bas-relief =as white and perfect as if they had died a month ago=; a single row of teeth, =like the points of cambric needles=, occupied both sets of jaws."[61]