Mammalia, Recent And Extinct; An Elementary Treatise For The Use Of The Public Schools Of New South Wales. PREFACE. The following pages, briefly descriptive of the economy of Seals, Dugongs, and Wales, and of their principal fossil allies, form the and Part, or Section B, of an Elementary Treatise on the Mammalia, designed for the use of the more advanced pupils in the Public Schools of this Country under the direction of the Council of Education. In issuing this portion of the work in question before the Ist Part or Section A, I feel that I have travelled out of the order of arrangement, as specified in the proposed synopsis of the Mammalian group in page 2 some remarks, therefore, by way of explanation...