1 IV D E X. 



Abdojien of insects, i. 230. 

 Aberration, chromatic, ii. 385. 

 Aberration of parallax, ii. 325, SM. 

 Aberration, spherical, ii. 324, 333. 

 Absorption, vegetable, ii. 21, 23. 

 Absorption, animal, ii. 17, 250. 

 Absorption, lacteal, ii. 104, 

 Absorption of shell, i. 174. 

 Acalepha, i. 142 ; ii. 210. 

 Acarus, i. 212. 

 Achatina zebra, i. 175. 

 Achromatic power, ii. 335. 

 Acephala, i. 159 ; ii. 88, 215. 

 Acetabulum, i. 282. 

 Acid secretions, ii. 39. 

 Ac rid a, ii. 155. 

 Acridium, i. 236. 

 Acoustic principles, ii. 294. 

 Actinia, i. 136, 146 ; ii. 75, 272, 337, 



412, 415, 

 Adipose substance, i. 97. 

 Adductor muscle, i. 160. 

 Aeration of sap, ii. 28. 

 Aeration, animal, ii. 31, 428. 

 iEschna, i. 247. 

 Affinities, organic, ii. 13. 

 Agastric medusER, ii. 70. 

 Age of trees, i. 73. 

 Age, effects of, ii. 434. 

 Agouti, i. 344. 

 Agrion, ii. 174. 

 Air-bladder, i. 298. 

 Air cells of plants, i. 67. 

 Air cells of birds, ii. 234. 

 Air, rarefaction of, in birds, i. 384. 

 Air tubes in plants, i. 05. 

 Albumen, i. 85. 

 Alburnum, i. 73; ii. 36. 

 Algse, ii. 21. 

 Alimentary canal, ii. 82, 

 Alimentary canal, Jbrmation of, ii. 



427. 

 Vol. II. 



Alitrunk, i. 243-. 



Alligator, i. 317, 319 ; ii. 290. 



Amble, i. 342. 



Ambulacra, i. 148. 



Amici, i. 68; ii, 42, 



Amphibia, i. 303,336. 



Amphisbaena, i. 310, 311. 



Amphitrite, i. 201. 



Anabas, ii. 219. 



Analogy, law of, i. 49; ii. 437, 



Anarrhichas, ii. 96. 



Anchylosis, i. 267. 



Ancillaria, i, 175, 



Anemone, sea, i. 146. 



Angler, i. 293; ii. 276. 



Anguis, i, 310, 315, 



Animal functions, i. 42. 



Animal organization, i. 79. 



Animalcules. See Infusoria. 



Annelida, i. 194; ii. ISO, 213, 272^ 



338. 

 Annular vessels, i. 66. 

 Anodon, i. 169. 

 Ant, ii. 274, 341, 343. 

 Ant-eater, i. 361; ii, 10(). 

 Antelope, ii, 109, 285, 

 Antelope, horn of, i, 3.5.5. 

 Antenna?, i, 206; ii. 273, 

 Antennulffi, ii. 93. 

 Anther, ii. 418, 

 Anthias, ii. 219. 

 Anthophora, i, 247. 

 Ant i pathos, i. 125, 

 Antler of deer, i. 351. 

 Antrum ma.xillare, ii. 284. 

 Aorta, ii. 83, 426, 

 Aphrodite, ii, 77, 91, 213, 

 Aplysia, ii. 95, 124, 3^-*. 

 Apodcs, i. 294, 

 Apterous insects, i. 212, 

 Aquatic animals, i. 11^^ 

 Aquatic plants, ii. 41. 



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