INDEX 



N. B. Entries in quotation marks are titles of books. Technical 

 names of genera and species are in italics; names of authors hi small 

 capitals. 



Acquired characters, 20, 151 

 Adriatic Sea, 138 

 ^Egean Sea, 139 



Africa, 94, 98, 110, 121, 123, 124, 

 126. 127, 128, 134, 139, 145, 170 

 AGASSIZ, 88 

 Agate, Neb., 113 

 Agave, 121 



Alaska, 106. 123, 131, 132, 140 

 Alps, 130 

 Americas, 137 

 Ammonites, 91 

 Amphibia, 33, 144, 155 

 Amphioxus, 65 

 Aricon sheep, 23 



Antarctic continent, 90 

 Ant-eaters, 134 

 Antelopes, 132, 135, 140 



blood of, 78 



mountain, 107 

 Anti-body, 74 

 Anti-toxin, 74 

 Antilles, 142 

 Ants, 89 

 Apes, blood of, 77 



Old World, 134 

 Archaopteryx, 96, 97 



Arctic annuals and plants, 130 



lands, 120 



Arctogtea, 128, 136, 137 

 Argentina, 109, 130, 135 

 Armadillos, 134 

 Asia, 104, 106, 107, 109, 110, 123, 



124, 127, 128, 129, 131, 132 

 Asphalt pits, 123 

 Asses, 99 

 Australia, 106, 110, 121, 127, 128, 



134, 135 

 Austria, 24 

 Azores, 142 



Balanoglossus, 65 

 Barriers, 125 

 BABTLETT, 38 

 Bat, 33 



wing of, 42, 47 

 BATESON, 5 

 Bats, 127, 144 

 Bavaria, 96 



Beagle, H. M. S., 15, 16 

 Bears, 32, 131, 140 



polar, 120 



short-faced, 135 

 Bees, 89 

 Beetle, larvae of, 154 



178 



