( 31)5 ) 
INDEX TO VOLUME I. 
A. 
Abbe’s, Prof., Apertometer, Description 
of, with Instructions for its use, 19. 
Acanthopus, an Ostracode Crustacean 
of a new Genus, 16. 
Acarus, on a Species of, believed to be 
new to Britain, 316. 
, on a Species of, of the genus 
Cheyletus, 133. 
Acid, Osniic, 261. 
Actinia mesembryanthenium, on a new 
Method of E.Kamining, 32. 
Address, The President s, 1. 
Adjustinent Collar, on a Large-angled 
Immersion Objective without, 51. 
, Cover, for Microscope Objectives, 
251. 
, the fine, of English Microscopes, 
205. 
Aerobic Vibrion, New, 292. 
Air, Schulze’s Mode of Intercepting the 
Germinal Matter of the, 206. 
Alcoholic Fermentation, 270. 
American Journal of Microscopy, New, 
259. 
Microscopical Congress, the, 253. 
Amphi pleura pellucida. Method of Ke- 
solving, 15. 
Amphiuma tridactylum, the Frog, and 
]\lan, the Structure of the Coloured 
Blood-corpuscles of, 57, 97. 
Amplifiers, 85. 
Anaerobiosis of Micro-Organisms, 259. 
Angle of Aperture of Objectives, on 
the Measurement of the, 321. 
Angles, Dihedral, of Microscopic Crys- 
tals, on the Measurement of the, 217, 
271. 
Angular Aperture defined, 360. 
Annelida and Crustacea, the Optic 
Rod in the, 283. 
, a new genus of, Wartelia, 355. 
Annual Report of the Society, 39. 
Antherozoids, Zoospores, &c.. Libera- 
tion of the, in the Lower Plants, 312. 
Anthrax, Theory of the Action of Bac- 
teria in, 370. 
Apertometer, Professor Abbe’s, Descrip- 
tion of, with Instructions for its use, 19. 
Aperture, Angle of, of Objectives, on 
tlie jMeasurement of the, 3M. 
, Angular, defined, 360. 
Aperture, Numerical, some Observa 
tions on, 51. 
Apertures of Microscopic Objectives, 
on a Theoretical Limit to the, 139. 
Ai)paratus for Resolving Test Objects, 
201 . 
Apple-tree, Rhizopods in an, 80. 
Aquaria, Escape of small Animals 
from, 280. 
Aquatic Animals, Live, Observation of, 
353. 
Arctic Expedition, The Diatomacem of 
the, 375. 
Ashes of Leaves, Microscopical Study 
of the, 316. 
Atlas der Diatomaceen - Kunde, 
Schmidt’s, 357. 
Atmosphere, Organisms suspended in 
the, 192. 
B. 
Bacteria, Action of very low Tempe- 
rature on, 25. 
■ in Anthrax, Theory of the Action 
of, 370. 
as Parasites in Splenic Disease, 
87. 
, Nutriment of, 86. 
', on Examining, Preserving, and 
Photographing, 195. 
, the Staining and Preparation of, 
268. 
Bacterium termq, on the Measui ement 
of the Diameter of the Flagella of, 
169. 
and Micrococcus, Life-His- 
tory of, 350. 
Balsam - mounted Objects, on a 
“ Simple Device ” for Illumination 
of the, 216. 
Balsamed Diatomaceous Tests, the 
Finest-lined, Method of Resolving, 
15. 
Bed-bug and its Allies, on the, 27. 
Bedwell, F. A., the Mastax-Frame- 
work in Melicerta ringens and Cono- 
chilus, described by, with further 
Notes on these Rotifers, 176. 
Bee, Honey, the Sting of the, 367. 
Bibliography, 88, 155, 228, 301, 380. 
Binocular Microscope, a French view 
of the, 119. 
with High Powers, 221. 
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