398 
INDEX. 
Hepatic Organ, on a rare Form of the, 
in the Worms, 366. 
High-angled Objectives for Histolo- 
gical Work, 81. 
High Power.*!, the Binocular with, 221. 
Histological Work, High-angled Ob- 
jectives for, 81. 
Histologists, a Test Object for, 148. 
Histology of the Exo - skeleton in 
“ Keptilia,” a Contribution to the, 
233. 
Hooked Spines on the “ Boot-fibres ” 
of British Polyzoa, 200. 
Host, a new Cestoid, 254. 
Hot Stage, a new Form of, 191. 
Hullite, 374. 
Huronian Clay-slates, a Microscopical 
Study of, 220. 
Hutton, Professor F. W., on a new 
Operculated Infusorian from New 
Zealand, 49. 
Hyalodiscus subtilis, 356. 
Hydra, INIode of Development of the 
Tentacles in, 282. 
, the Beproduction of, 267. 
, Ti embley’s Experiments on turn- 
ing a, inside out, 249. 
viridis, Abnormal Appearances 
of, 80. 
Hydroida of the Gulf Stream, 223. 
I. 
Illumination of Balsam-mounted Ob- 
jects, on a “ Simple Device ” for 
the, 246. 
, Dark-Field, a new Device for, 
347. 
Imbedding Substance, White of Egg 
as an, 258. 
Immersion Objective, on a Large-an- 
gled, without Adjustment Collar, 51. 
Objectives, Dry v., 154. 
, on a “Simple Device” 
for the Illumination of Balsam- 
mounted Objects for Examination 
with, 246. 
Paraboloids, 192. 
Prism, 309. 
Infusoria, Botatoria, &c., a Method of 
Preserving, with their Organs ex- 
tended, 189. 
, the Contractile Vacuoles of the, 
Physiology of, 257. 
■ , &c., Preparations of, 221. 
Infusorian, on a new Operculated, 
from New Zealand, 49. 
Inhalation and Exhalation of Aqueous 
Vapours by the Leaves, part played 
by the Stomata in tlie, 334. 
Insect Digestion and Development, 144. 
Insects, Eyes of, 225. 
, the Causes of Buzzing in, 276, 
373. 
Insects, the Nutrition of, 281. 
, Pygidium of, 379. 
, the Structure of the Brain in 
different Orders of, 271. 
Intracellular Fermentation, 23. 
Inversion of Sugar by Fungi, the, 24. 
J. 
Journ d of Microscopy, New American, 
259. 
of tlie Society, 30, 36. 
Jubilee, Professor Schwann’s, 208. 
K. 
Keith, Professor B., on the Besults of a 
Computation relating to Tolies’ i 
Objective, 142. 
Kitton, F., on some new Genera and 
Species of Diatomacem, by M. P. 
Petit, translated by, 237. 
Kutzing’s Diatomaceje, 368. 
L. 
Large-angled Immersion Objective 
without Adjustment Collar, on a, 51. 
Lawson, Dr., Obituary, 27. 
Leaves, Ashes of. Microscopical Study 
of the, 346. 
, Exhalation and Inhalation of 
Aqueous Vapours by the, part played 
by the Stomata in the, 334. 
, the Functions of, 334. 
Liberation of the Zoospores, Antbero- 
zoids, &c., in the Lower Plants, 342. 
Lichens, Development of, 346. 
, Microscopical Slides of, 379. 
Life-History of Bacterium termo and 
Micrococcus, 350. 
of Filaria Bancrofti, the, 376. 
of a minute Sejitic Organism, the, 
203. 
of Spirillum, 352. 
Life, the Phenomena of. Influence of 
Bepose and Motion in, 345. 
Ligula, the Genus, 86. 
Limit of Vision, Ultimate, with our 
present Lenses, 169, 337. 
to the Apertures of Microscopic 
Objectives, on a Theoretical, 139. 
Limits of Accuracy in Measurement 
with the Microscope, 344. 
of Microscopic Vision, 379. 
Liquids, Diatoms in Coloured, 79. 
, the Movement of Microscopic 
Particles suspended in, 146, 272. 
Lissajou's Curves, 94, 160. 
Low Temperature, Action of very, on 
Bacteria, 25. 
M. 
Man, Amphiuma tridactylum, and the 
Frog, the Structure of the Coloured 
Blood-corpuscles of, 57, 97. 
