CHAPTER VI.. Carboniferous Fauna Continued--George Herbert's Ode on

Carboniferous fauna continued--George Herbert's ode on "Man"--His idea of creation--What nature teaches on this subject--Molluscous animals--Range of species in time proportionate to their distribution in space--Two principles of renovation and decay exhibited alike in the physical world and the world of life--Their effects--The mollusca--Abundantly represented in the carboniferous rocks--Pteropods--Brachiopods--Productus--Its alliance with Spirifer--Spirifer--Terebratula--Lamellibranchs--Gastropods-- Land-snail of Nova Scotia--Cephalopods--Structure of orthoceras--Habits of living nautilus,