CONTENTS. 



Air, weight of, - 163 



elasticity and resistance of, 164 



how cleansed, - 170 



Alternate succession of day and night, benefits . 



resulting therefrom, - 18? 



Animals, their construction and properties, - 38 



diversity of bulk, taste and habit of, 40 



. prodigious numbers of, . ib. 



instincts of, - 47 



provision for keeping their numbers 



within due limits, ib. 



of the graminivorous kind, 4y 



of the weasel kind, - 50 



varieties of, - - 56 



divisions into classes, orders, &c. ib. 



Animal Flowers, - 125 



Atmosphere, - 158, 



extent of, - - 164 



-its use, 165 



great thoroughfare to the feathery 



creation, . - - 170 



phenomena of, - - X72 



Atmospheric phenomena, meteors, &c. uses of, 178 



Beavers, their wonderful foresight, &c. - 52 



Birds, their structure, appetites, &c. 63 



amazing strength of their wings, 65 



A2 



