Mr. F. Fitch: Balanus balanoides. Chyle, stomach, and appendages of drone-fly. Teeth of blow-fly shown in relief. Mr. C. J. Fox: Polariscope for convergent light, with mica and selenite combinations. Rev. T. W. Freckelton: Macrospores and microspores from coal, compared with spores of Selaginella selaginoides. Mr. H. E. Freeman: Eggs of Gasterophilus equi from body of female, showing provision for attachment to hairs of the horse. Dr. W. J. Gray: Rutilaria epsilon and other rare diatoms. Messrs. J. How and Company: Fossil wood with insect borings and excreta, &c. A new microscope lamp. Mr. J. Mayall, jun. : Some special slides of Amphipleura pellucida. Dr. Millar: A new camera lucida, designed by Dr. Russell, of Lancaster. Triceratium favus, arranged to show images of a black cross. Mr. A. D. Michael: The newly discovered male of Cheyletus venustissimus (see p. 313). Professor Owen, C.B. : Sections of "Granicones," described at p. 233. Mr. F. Oxley: The so-called "Pygidia" of grasshoppers, crickets, &c. Mr. Thos. Palmer: Sections of butcher's broom, common cane, &c. Mr. B. A. Priest: Portion of the bag of a starfish from China. Mr. W. W. Reeves: Section through the cone (Lepidostrobus) of Lepidodendron, with spores in situ, from Lancashire coal-measures. Mr. C. Stewart : Section through the growing point of Anacharis alsinastrum. Mr. A. Topping: Various sections from the tail of a whale (stained). Mr. F. H. Ward: Sections (24) of various plants double stained by himself. Anaerobiosis of Micro-Organisms, 259. Angular Aperture defined, 360. a new genus of, Wartelia, 355. Apertometer, Professor Abbe's, Descrip- Aperture, Numerical, some Observa Apertures of Microscopic Objectives, 201. Apple-tree, Rhizopods in an, 80. Aquatic Animals, Live, Observation of, 353. Arctic Expedition, The Diatomacea of Ashes of Leaves, Microscopical Study Atlas der Diatomaceen - Kunde, Atmosphere, Organisms suspended in B. Bacteria, Action of very low Tempe- in Anthrax, Theory of the Action 87. as Parasites in Splenic Disease, Nutriment of, 86. on Examining, Preserving, and the Staining and Preparation of, 268. and Micrococcus, Life-His- Balsamed Diatomaceous Tests, the 45. Bed-bug and its Allies. on the, 27. with High Powers, 221. Cap, Protecting, for Focussing under Capnodium Footii, 161. Castracane, Count, on Diatoms, 152. Cestoid Host, a new, 254. Chemical Society, Soirée of the, 149. Cheyletus, the Genus, on a Species of venustissimus, 313. Clay-slates, a Microscopical Study of Cleaning Slides and Cover-glasses, 295. new Process of, with a Picro-aniline Colours, the Ornamental, of Daphniada, Commercial Microscopy, 257. Conochilus and Melicerta ringens, the Contractile Vacuoles of the Infusoria, croscope as a Polariscope for, 207, 292. Coral, on a new, Stylaster stellulatus, Glasses and Slides, Cleaning, 295. Crustacean, on an Ostracode, of a new Crystals, Microscopic, on the Measure- Curves, Lissajou's, 94, 160. D. Dallinger, Rev. W. H., on the Measure- Dark-Field Illumination, a new Device Death Point, Thermal, of a minute Desiccation and Revival, Diatom, 26. and Structure of Sponges, 223. Device, Simple, for the Illumination of Diatom Desiccation and Revival, 26. Kutzing's, 368. and Radiolarians, on the sup- Diatomaceous Tests, Balsamed, Method Diatoms, Count Castracane on, 152. New, 367. the Revivification of, 150, 311, Digestion and Development, Insect, 144. Disease, Splenic, Bacteria as Parasites the Germ Theory of, 221. E. Echinodermata and Turbellaria, Ani- Embryology of Sponges, the, 263. England, on the Present Condition of English Microscopes, the Fine Adjust- Enteric, Typhoid, and other Diseases, Eozoon, Palæozoic Fossils mineralized with Silicates, in illustration of, 219. Spider, 26. Fossils called "Granicones," on the, Paleozoic, mineralized with Sili- French view of the Binocular Micro- Frog, Amphiuma tridactylum, and Plate, Improved Form of, 298. G. Gases, Electric Discharge in, the Com- Gemmiparous and Fissiparous Repro- Germ Hypothesis of Putrefaction, the, Theory of Disease, the, 221. Glass, Optical Constants of, Influence H. Hairs, on the Visibility and Optical Haliphysema Tumanowiczii not a Heliozoon, Apparent discriminative Life, the Phenomena of, Influence of Limit of Vision, Ultimate, with our to the Apertures of Microscopic of Microscopic Vision, 379. the Movement of Microscopic Low Temperature, Action of very, on M. Man, Amphiuma tridactylum, and the |