The Trias? What minerals are found in this formation? What springs? [Illustration: Fig. 27.] [Illustration: Fig. 28.] [Illustration: Fig. 29.] What fossils? How are the fishes of the earlier and later portions distinguished? What peculiarity of the red sandstones is mentioned? By what kinds of animals were the tracks, which they contain, made? Give localities of the new red sandstone. What are the three divisions of the Oölitic system? [Illustration: Fig. 30.] [Illustration: Fig. 31.] [Illustration: Fig. 32.] Describe the Lias. The Oölite. The Wealden. What are the general peculiarities of the system? [Illustration: Fig. 33.] What are the fossil animals of the system? By which class of fossil animals is the system characterized? [Illustration: Fig. 34.] Describe the Ichthyosaurus. The Plesiosaurus. Pterodactyle. The Iguanodon. Where is the system developed? What are the divisions of the Cretaceous system? How are the layers of chalk separated? What is the geological position of the Neocomian system, and the greensand of this country? What are the fossils of this system? [Illustration: Fig. 35.] [Illustration: Fig. 36.] What the geographical range? How are the tertiary deposits distinguished from the older formations? Upon what principle is the tertiary system divided? What are these divisions called, and what does each, name signify? [Illustration: Fig. 37.] [Illustration: Fig. 38.] [Illustration: Fig. 39.] [Illustration: Fig. 40.] [Illustration: Fig. 41.] [Illustration: Fig. 42.] [Illustration: Fig. 43.] In what portion of the tertiary period was the drift deposited What is the geographical range of the drift? Of what does it consist? What is the latest tertiary deposit? What are the fossils of the tertiary system? Describe the Paleotherium. The Anoplotherium. The Megatherium. The Mastodon. The Mammoth. What other animals belonged to this period? Where are the tertiary deposits found? What formations are regarded as recent? What formations of this class are accessible? What others are in progress? What are the fossils of this formation? SECTION VI. What is a fossil? In what ways are they preserved? When is a fossil said to be mineralized? Describe the process of mineralization. How is it proved that the removal of the organic matter and substitution of mineral particles are simultaneous? Were animals created before vegetables? How is this shown? At what period was the vegetable growth the greatest? What forms of animal life were most abundant during the earlier periods? What vertebrated animals belonged to these periods? What advance is made in the new red sandstone period? During what period do the mammalia first appear in abundance? During what geological period was man created? How are the footprints and skeletons of human beings hi solid rocks accounted for?