INDEX. 



Acineta, the, what, 16. 



Acrogens, families of the, 109. 



Actinozoa, the, 171, 177. 



Agassiz on evolution, 41. 



Agave, or aloe family, the, 129. 



Algae, families of the, 91. 



Algae, the higher, 99. 



Amaryllidaceae, (amaryilis family,) 

 the, 128. 



Amoeboid movement, why so called, 

 29. 



Amphibia, the, 242, 251. 



Amphibia, why so called, 250. 



Analogous, anatomical import of the 

 term, 76. 



Anatomy, import of the term, 9. 



Anaxagoras, teachings of, IT. 



Animal kingdom, four primary di- 

 visions of the, 78. 

 subdivisions of the, 82. 



Animals, souls of, 13. 



Arachnoidiscus Ehrenbergii, the, 93. 



Arrowroot family, the, 128. 



Articulata, the, 213. 



Articulates, construction of the, 78. 



Arum family, the, 131. 



Asteroidea, the, 185. 



Atomic theory, the, noticed, 18. 



Aves, or birds, 256. 



Banana family, the, 127. 



Beale, Dr., quotation from on life, 



17- 



Bichat's definition of life, 12. 

 Bimana, import of the term, 278. 

 Biology, import of the term, 9. 

 teachings of, 10, 25. 

 confirmatory of dualism, n. 

 Bioplasm, what, 26, 33. 

 how nourished, 26. 

 all animal life originated from, 



27. 



growth an essential property of, 

 30. 



Birds, families of, 256. 

 Blood, circulation of the, in verte- 

 brates, 241. 



in amphibia and reptiles, 242. 

 in birds and mammals, 242. 

 Botany, definition of the term, 9. 

 Brachiopod, the, 192, 196. 

 Bromeliaceae family, (pine apple,) 

 128. 



Carnivora, (beasts of prey,) the, 275. 

 Carpenter, Dr. W. B., his definition 



of life, 12. 



Cephalopodae, the, 192, 208. 

 Characeae, the, 109. 

 Ccelenteratae, the, 171. 

 Coleridge, on life, 12. 

 Comatulidse, the, 185. 

 Confervas, the, 91. 

 Coniferous plants, the, 142. 

 Conjugateae, (stoneworts,) the, 91. 

 Conscience, 288. 

 Consciousness, 282. 

 Construction of mollusks, 78. 



of radiates, 78. 



of vertebrates, 78. 

 Crustacea, the, 220. 

 Cuvier, his divisions of the animal 



kingdom, 78. 

 Cyperaceae, the, 125. 



Democritus, teachings of, 10. 

 Desmidiaceae, family of the, 88. 

 Diatomaceae, family of the, 92. 

 Diatoma vulgare, the, 95. 

 Dipnoi, the, 250. 

 Dualism, 10, 18, 37. 



Echinodermata, (spiny-skinned,) the, 



171, 184. 



Edentata, (toothless,) the, 269. 

 Ehrenberg, Professor, on Vorticella. 



14. 

 Electricity, -powers of, 54. 



