1000 



Illuminator,Vertical, and Homogeneous 

 Immersion Objectives, 20(3. 



, Woodward's Oblique, 769. 



lUumiuators, Immersion, 27, 151. 



Iiumersiou, Homogeneous, 774. 



, Fluid for, Chloride of Cad- 

 mium as, 943. 



, New Fluids for, 332. 



, on Stephenson's System of, 



for Microscope Objectives, 256. 



Illuminator, Catoptric, 36. 



Illuminators, 27, 151. 



Object-glasses, Homogeneous, Note 



on, 394, 489, 490. 



■ Objective, ToUes' }, Note on Pia- 

 gi-ams exhibiting the Path of a Eay 

 through, 269. 



■ Objectives, Aperture Measure- 

 ments of, 842. 



, Homogeneous, and tlie Ver- 

 tical Illuminator, 266. 



, Homogeneous, Mixture of 



Oils for, 332. 



, Oil, 331. 



, Oil, and the Apertometer, 



Col. Woodward on, 140. 



Prism, Kevolver, for Sub-stage 



Illumination, 32. 



Stage Illuminator, 837. 



Induced Currents, Effects of, on the 

 Nervous System, 853. 



Inflorescence, Male, of Dioon edule, 

 Disengagement of Heat which ac- 

 companies the Expansion of, 752. 



' lufusiousthiere,' Stein's, 590. 



Infusor, New, Tintinnus semicUiatus, 

 587. 



Infusoria, Evolution of, from the Lower 

 Protozoa, 438. 



, Fertilization of Red Algse by the 



Agency of, 932. 



, Influence of the different Colours 

 of the Solar Spectrum on, 900. 



. , &c., Method of Preserving, 331, 



763. 



, New, Observations on, 899. 



, Parasitism amongst, 94. 



Injection, Microscopical, of Molluscs, 

 94. 



Innervation of the Respiratory Organs, 

 697. 



Insecta. See Contents, s. 



Instruments, Optical, Measurement of 

 the Amplification of, 184. 



Integuments, Seminal, of Gymno- 

 sperms, 911. 



Intelligence and Habits of Vespa 

 maculata, 559. 



Intercellular Spaces, Relationship of, 

 to Vessels, 912. 



Invertebrata. See Contents, viii. 



Isis, New Species of, 281. 



Isoetes, Apogamy in, 319. 



Isolating the Connective-tissue Bundles 



of the Skin, Method of, 323. 

 Isolation of the Optic Nerve Fibres and 



Ganglion-cells of the Mammalian 



Retina, 614. 

 Isopod, Gigantic, of the Deep Sea, 152. 

 Isiipoda, Hermaphroditism of, 720. 

 Italian Algse, 607. 



Jaws, Annelid, from Scotch and Cana- 

 dian Palaeozoic Rocks, 884. 



Jensen's Turbellarian Worms of Nor- 

 way, 573. 



Journals, New Cryptogamic, 154. 



K. 



Keith, Prof. R., Note on Diagrams 

 exhibiting the Path of a Ray through 

 Tulles' ^ Immersion Objective, 269. 



, Note on Mr. Wenham's Paper 



" On tlie Measurement of the Angle 

 of Aperture of Objectives," 270. 



, Reply of Mr. Wenham to his 



Note, 271. 



Kerguelen's Land, Fauna of, 700. 



, Invertebrates of, 398. 



Kidney of Fresh-water Crayfish, 291. 



Kitton, F., New Species of Diatomacese 

 from the Caspian Sea, 677. 



, Thallus of the Diatomacese, 38. 



Klein and Smith's Atlas of Histology, 

 700. 



L. 



Laboratory for Microscopic Work, 52. 



Lagenidium Rabenhorstii, a new Phy- 

 cumycete, 921. 



Lake Erie, Species of Marine Crus- 

 tacea in, 152. 



Nyassa, Algge from, 608. 



of Geneva, Deej)-water Fauna of, 



700. 



Lamellibranchiata, Eye of, 303. 



, Glands in Foot of, 859. 



, Parasites of, 285. 



Large Micro-photographs, 619. 



Larval Cases of PlirygancidsB, 408. 



Larva of Culex, Respiratory Organs of, 

 299. 



of Newt, Method of Examiuino' 



Living Cells of, 765. 



Law and Medicine, Value of Microscope 

 in, 946. 



of Vision, Fraunhofer's Optical, 



delusive Application of, &c., 9. 



Leaves, Absorption of Water by the 

 Lamina of, 750. 



