Note 38 — LESSON XVII.
Reading edition
In the last months of 1890, fish remains were found in rocks at Cañon City, Colorado, belonging to the first Silurian series. New discoveries constantly change such statements as that in the text.
Reading edition
In the last months of 1890, fish remains were found in rocks at Cañon City, Colorado, belonging to the first Silurian series. New discoveries constantly change such statements as that in the text.