Elements of Geology, Intended for the Use of Students
Elements of Geology, Intended for the Use of Students
St. John, Samuel, 1813-1876
The book Elements of Geology, Intended for the Use of Students was written by author St. John, Samuel, 1813-1876 Here you can read free online of Elements of Geology, Intended for the Use of Students book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Elements of Geology, Intended for the Use of Students a good or bad book?
What reading level is Elements of Geology, Intended for the Use of Students book?
To quickly assess the difficulty of the text, read a short excerpt:
The body and head were covered with bony, enamelled scales. This fish seems not to have attained a large size ; specimens are about seven inches in length. 203. Another equally singular ge- nus was the Pterichthys the winged fish (Pteron, a wing; ichthus, a fish, ) characterized by its two wing-like lateral appendages, which were its weapons of defense, and may have assisted in locomotion. Its body was protected by strong, bony, enam- Cephaiaspis Lyeua. Elled plates; its head was small, body fl...at, and its tail thickly covered with scales. It did not exceed a foot in length. Fig. 101. Pterichthys Corrmtus. THE DEVONIAN SYSTEM. Fig. 102. 161 Coccostcus. 204. The Coccosteus resembles the Pterichthys in general structure and covering, but was destitute of wing-like appen- dages. It derives its name from the berry-like tubercles which stud its enamelled bony plates (kokkos a berry ; osteon, a bone. ) Its head was large, covered with several plates, and attached to the body by small articulating surfaces.
User Reviews: