CONTENTS. 



OBSERVATIONS ON NATURAL HISTORY. 



Introduction to Natural History. 



Origin of Natural Productions not to be traced 4 



Existing Species are varieties of the original, in the Natural as well as 



the Domesticated Animal 4 



Order of the study of Nature 5 



Of Matter 6 



Its Properties cause Sensations and found the idea of Spirit 7 



Its different states, as Solid, Fluid, Vaporous 8 



Its different species, as Mineral, Vegetable, and Animal 10 



Principle of Classification 10 



Nature particularly careful of ' Forms ' 10 



Species and Varieties 12 



Of Animal Matter 12 



Comparison between Vegetables and Animals 16 



Comparison in the mode of digestion 16 



Comparison in the circumstances of engrafting 18 



Comparison in propagation of Species 19 



Comparison in being affected by Impressions 20 



Comparison in respect to Matter 21 



Comparison by means of Chemistry 22 



Comparison in respect to Colour 23 



Vegetables and Animals, their point of connexion 23 



Vegetables and Animals, their mutual dependence 23 



Of Motion in Vegetables 24 



Writers on Natural History 24 



Arbitrary and Natural Divisions in Natural History 25 



Classification of Animals. 



Classes of Animals according to their Hearts 25 



Classes of Animals according to their Breathing Organs 26 



Classes of Animals according to Essential and Circumstantial correlated 



Characters 26 



Affinity of Fowl and Amphibia 28 



Classes of Animals according to their Brains 28 



Classes of Animals according to their modes of Generation 34 



