INDEX. 



V The Figures in the columni indicate the pages of the Text in which the particular term or tubject it 



ABACUS (Gr. abax, a slab), in Architecture, the 

 crowning member of the capital of a column, 

 469. 



Abdomen (Lat. abdo, I hide or cover), the large 

 cavity commonly known as the belly, 115. 



Ablution, necessary to health, 727. 



Abranchia (Gr. a, not, branchia, gills), animals 

 destitute of gills, in Zoology, 141. 



Acanthopterygii (spiny-finned), a Cuvierian order 

 of fishes, 158. 



Acanthus, Acanthads, Acanthaceae, in Botany, 104. 



Acaridze (Gr. acari, a mite), the Mite family, 144. 



Acetate of lead, sugar of lead, 307. 



Acetic acid, in Chemistry, 307 ; in Organic Chem- 

 istry, 333. 



Achromatic (Gr. a, without, and chroma, colour), 

 in Optics, applied to lenses, 248. 



Acids, 307 ; action of upon bases, 308 ; action of 

 upon salts, 309 ; action of upon metals, 312 ; 

 equivalents of the acids, 308 ; organic acids, 

 335 ; monobasic acids, 317. 



Acotyledon, acotyledonous (Gr. a, not, cotyledon, 

 seed-lobe), plants whose seeds have no cotyle- 

 dons or seed-lobes, in Botany, 75, 88, no. 



Acoustics, 253. 



Acrogens, acrogenous (Gr. acres, the point or 

 apex, and gennao, I produce), a term applied 

 to those plants which, like the tree-ferns, in- 

 crease by additions to the growing point, and 

 never augment in thickness when once formed, 

 72, 88, 89, no, in, 594. 



Actinia, or sea-anemone, its structure, in Zoology, 



137- 



Actinozoa, class in Zoology, 136. 

 Action and reaction, in Natural Philosophy, 199. 

 Adder (common and black), venomous serpents, 



164. 



Adductors, in Zoology, 151. 

 Adhesion (Lat. adhcereo), a property of matter, 



196. 



Adjutages, in Hydrodynamics, 233. 

 ./Egina, temple of, 469. 

 jEolipyle (jEolus, the god of the winds, and frila, 



a ball), figured and described, 423. 

 Aerodynamics, 236. 



Aerolites (meteoric stones), theories respecting, 48. 

 Aerostatics, 236. 



Affinity or attraction, in Chemistry, 325. 

 Agate, 400. 



Aggregation, states of, in Natural Philosophy, 195. 

 AGRICULTURE, 513-544. 



Ailes, Aisles (wings), in Gothic Architecture, 472. 

 Air, laws of, 237 ; pressure of air, 237 ; air-pump, 



238 ; as necessary to health, 721. 

 Alabaster economically considered, 392. 

 Albatross, genus Diomedea, in Ornithology, 168. 

 Albertine or Albertite (coal), 388. 

 Albion metal, composition of, 413. 

 Albumen, in Vegetable Physiology, 75 > m Diet * 



etics, 743. 

 51 



Albuminous or protein compounds, 336. 



Alcidte (Auk tribe), in Ornithology, 167. 



Alcohol, in Organic Chemistry, 333 ; in Applied 

 Chemistry, 350; in Dietetics, 751. 



Alder- tree, 106, 600. 



Algae, in Botany, 1 1 1. 



Algerian onyx marble, 391. 



Alhambra, in Architecture, 475. 



Alkalies, alkaline substances, in Chemistry, 327. 



Alkanet (Fr.), a kind of reddish-purple dye, of a 

 resinous nature, obtained from the roots of the 

 Anchusa tine tor ia, a native of Southern Europe, 

 102. 



Alligators, species of the genus Crocodilus, 166. 



Alloy (Fr.), in Chemistry, 331. 



Alpaca, as a beast of burden, 433 ; natural history 

 and management of, 656. 



Alum, natural history and manufacture of, 397. 



Aluminum, the metallic base of alumina, in Chem- 

 istry, 329; in Metallurgy, 412. 



Amalgams (Gr. ama, together, gamed, I marry), 



33i. 



Amber, its nature and uses, 390. 

 Ambergris (amber, and gris, gray), 717. 

 Amethysts, their natural history, 394, 

 Amiens cathedral, 474. 



Ammonia or hartshorn, in Chemistry, 307, 321. 

 Ammonite, in Geology, 30. 

 Ampere's theory of magnetism, 277. 

 Amphibia (Gr. ampki, both, bios, life), a class of 



animals possessing the property of living either 



in the water or on dry land, 162. 

 Amphitheatre, in Architecture. 471. 

 Amusements necessary to health, 732. 

 Anacanthini, soft-finned fish, sub-order in Zoology, 



157. 



Analysis (Gr. analyo, I dissolve), in Chemistry, 305. 

 Anaplotheria, fossil, 181. 



Anchors (Gr. anchora), in practical navigation, 453. 

 Anemometer (literally, wind-measurer), 44, 3 

 Anemone, in Floriculture, 567. 

 Anemone (sea), actinia, its structure, in Zoology, 



137- 



Angina pectoris, treatment of, 772. 

 Angiospermae, in Botany, 104. 

 ANGLING, 697-704. 

 Anguinidse (family of the slow-worms), in Zoology, 



Anhydrous (Gr. a, not, kydor, water), in Chem- 

 istry, 3"- 



Animalisation, in dyeing, 345- 



Animals, distribution of, 64; classification ol, 

 132. 



Annatto, or Arnotto, colouring-matter, 342. 



Annealing, process of, in glass manufacture, 362. 



Annobium pertinax (death-watch), in Zoology, 150. 



Annuals, list of, for the flower-garden, 564, 



Annulosa, sub-kingdom in Zoology, 130. 



Ant-eaters, a group of Edentate animals, 177, IJ 



Antelope family, order Ruminantia, in Zoology. 183. 



