CONTENTS OF VOL. I. 



PAGE 



Editor's notice, ix 



Biographical memoir, xi 



Alphabetical catalogue op authors whose 



WORKS are referred TO IN THIS VOIiUME, 



American authors, 9 



Foreign authors, 13 



Author's preface, 19 



Introduction, 29 



I. Op the rise of scientific zoologt in the united 



states, with notices of naturalists, particularly 



connected with the subject of this work, . . 31 



II. Op the IGNOlliNCE AND NEGLECT OP AMERICAN LABORS 



IN ZOOLOGY EXHIBITED BY EUROPEAN NATURALISTS, 56 

 III. Of SOME OP THE OBSTACLES IMPEDING THE STUDY OF 



ZOOLOGY, AND THE MEANS OF OVERTHROWING THEM, 63 



IV. Of classification, 84 



V. Of THE geographical distribution of genera and 



species, and the existing causes influencing it, 99 

 Geographical Features of the Countiy, . . .100 



Climate, 110 



Geological Structure, Il2 



Vegetation, 113 



Humidity and Dryness, 113 



Elevation, 115 



Sudden and Extreme Vicissitudes of Temperature, 1 27 



Inundations of Rivers, 130 



Fires, 131 



Agriculture, 132 



Destruction by Animals, 133 



Proximity to the Sea, 135 



Local Causes, 138 



