W
- Walking fern, structure and mode of reproduction of, i. 352
- Walnut, cause of blistered leaves of the, i. 291
- Wasp, a West Indian, killed by fungi, i. 293, 294
- Water almost impervious to heat, i. 36
- proportions of oxygen and hydrogen in, i. 94
- combination and decomposition of, i. 94
- force of the chemical combination requisite to form a gallon of, from the combustion of the two gases, i. 97, 98
- force required to freeze water, i. 98
- amount of voltaic electricity required to separate a given quantity of water into hydrogen and oxygen, i. 101
- the most common radicle in the inorganic and organic world, i. 107
- the water of crystallization, and the effect of heat upon it, i. 108
- production of aqueous solutions of organic and inorganic matter, i. 111
- water secreted night and morning by plants, i. 429
- Water-flea, arborescent, structure of the, ii. [208]
- Waterproofing, India rubber prepared for, i. 120
- Wax, vegetable, formation of, i. 422, 423
- functions of, i. 423
- Wheat, probable causes of the rust and smut of, i. 281
- Cordyceps on the ergot of, i. 293
- Whelks, tongues of, ii. [239], [240]
- Wood-louse, or slater, structure of, ii. [202]
- Wood of trees, fibro-vascular bundles constituting the wood of, i. 173, 174
- structure of, i. 408
- Woodsia, structure of, i. 349
- Woodsia ilvensis, structure and fructification of, i. 350
- Woodsieæ, or Peranemeæ, characters of the group, i. 350
- Worms, or annulosa, characters of, ii. [144]
- Wormskioldia sanguinea, structure and habitat of, i. 239, 240
- Wormwood, absorption of radiant heat by the perfume of, i. 44
- Wrangelia penicillata, spores of, i. 237
- Wrangeliaceæ, structure and mode of reproduction of, i. 237
X
- Xenodochus parodoxus, spores of, i. 276
Y
- Yeast plant, i. 286, 288
- yeast of beer, i. 287, 288
- German yeast, i. 288
- Yellow dye, obtained from aniline, i. 124
- Yttrium, i. 4
Z
- Zinc, i. 4
- spectrum of volatilized zinc, i. 64
- atomic weight of, compared with that of hydrogen, i. 100
- peroxide of, combination forming, i. 104
- seleniate of, different forms assumed by, according to the temperature of the water united with, i. 107, 108
- Zirconium, i. 4
- Zonaria, structure of, i. 247
- Zooids of Hydrozoa, ii. [88-90]
- Zoophytes, characters of, ii. [81]
- Zoospores of Confervaceæ, i. 208
- Zostera marina, or sea wrack, crimson fringe of the, i. 231
- characters of the flowers of, i. 387
- Zygnema quininum, mode of reproduction of, i. 217
- Zygodesmus fuscus, spores of, i. 286
THE END.