The book is an attempt, for the benefit of the students of Geology as also the common readers, to furnish an elaborate account of the leading principles and facts of the vast and ever increasing science of Palaeontology. The work includes all the essential facts coming under Palaeontology as a department of science, sufficiently distinct to stand alone and yet most closely connected with the sciences of Zoology and Botany on the one land and with Geology on the other. The first part of the book furnishers a general account of the principles of Palaeontology. In the second part, the past history of the animal life, technically known as Palaeozoology has been given in details. More space has been allotted to the Invertebrata group in this section than to the Vertebrata group, upon the ground that palaeontological students are, as a rule, much more largely concerned with the former than the latter. An attempt has also been made to give, as far as possible, brief and general definitions of the more important and widely distributed families of Invertebrata as well as, to a more limited extent, of the Vertebrata. The third part of the book gives a brief and very general view of Palaeobotany or the past history of the vegetable kingdom. This is a useful book for the students and common readers in search of knowledge on the subject.'