INDEX. 



825 



Ibla quadrivalvis. Body Spaces and So- 

 called Excretory Organs, 1S5 



Ichthyi .taenia, New Species, 256 



Ignatowsky, \V. v., Illuminating Arrange- 

 ment for the Metal-microscope, 515 



Ikeda, I., New Deep-sea Echiurid, 50 



— New Echiuroid, 187 



— Swimming Habit of Japanese Entero- 



pneust, 52 

 Ilikevic, 0., Cellular Membranes of Fungi, 



618 

 Illuminating and other Apparatus. See 



Contents, xxxiv 



— Arrangement for the Metal-microscope, 



515 



— Opaque Objects, Simple Method, 22, 



118 

 Illumination, Dark-ground, Microscopical 



Observations with, 516 

 Reichert's Reflecting Condensers, 



636 

 Siedentopf's, 396 



— in High-power Photomicrography, 674 



— Microscope, 397 



— with Spectral Light and Projection of 



Spectra, Direct-vision Prism and 

 Apparatus for, 515 

 Illuminator for Opaque objects, Koristka's, 

 398 



— New. for the Microscope, 411, 417 

 Image Formation, Microscopical. 772 

 Images, Microscopical, Resolution of 



Edges, 520 

 Imbedding, Combined Method, 531 



— Objects. See Contents, xxxvii 

 Imboden, W., Simple Drawing and Pro- 

 jection Apparatus, 519 



Immunity of Snakes to Amphibian Poison, 

 566 



— to Rabies, Heredity, 566 

 Impact Tests, 791 



Iucertse Sedis. See Contents, xvii 

 Incisors of Woodchuck, Abnormal, 561 

 Index of Refraction, Simple Arrangement 



for Determining Microscopically, 649 

 Indol, Method of Detecting, 526 

 Inflorescences, Androgynous, in Dumor- 



tiera, 206 

 Infusoria, Influence of Alcohol on Life- 

 cycle. 408 

 Infusorian. New Ciliated, 192 

 Infusorians in Holothurians, 361 

 Ingham, W., Bryophytes of Somerset, 481 



— Tortula cernua, 595 



— Yorkshire Muscinese, 207 

 Inheritance, Chondriosomes as Bearers, 



449 



— Experimental Estimation of the Theory 



of Ancestral Contributions, 339 

 Injecting Objects. See Contents, xxxvii 

 Injection Mass, Transparent Red, 782 



Innervation of the Pharynx in Oligochseta, 



354 

 Insect Parasite. 627 

 Insecta. See Contents, xii 

 Insects and the Asclepiadacese, 591 



— Apparatus for Observing the Suction of, 



112 



— Aquatic, Respiration, 348 

 Stigmata, 348 



— Disease-carrying, Preparing, 258 



— Harmful, Destruction by Fungi, 503 



— Injurious, and Acarines in Ireland, 457 



— Injurious to Olives, 716 



— Leg Tendons, 40 



— Muscle Attachment, 456 



— On the Transformation of, 269 



— Primitive, 182 



— Scale, and White Flv, Fungus Diseases, 



502 



— Thoracic Sclerites, 713 



— Tropisms, 568 

 Intermetallic Compounds, 115 

 Intestinal Flora, 236 



Intestine of Tadpoles, Degenerative 

 Changes, 451 



— Relation of Size and Structure to Diet, 



35 



— Studying Fat -absorption, 259 

 Intracellular Network of Nerve-cells, De- 

 monstrating, 783 



Invertebrata. See Contents, xi 



Invertebrates, Are there Suprarenal Bodies 

 in ? 344 



Iredell, C. E., Effect of Radium on Bac- 

 teria, 628 



Iron, Alloys, with Arsenic and Bismuth, 

 671 



— and Carbon Alloys, 404 



— and Steel Bars, Dimensional Changes 



produced by Magnetism, 537 



Hardening and Tempering, 670 



under Cyclical Variations of 



Stress, Elastic Limits, 676 

 Uniform Nomenclature, 787 



— Cast, Solidification, 265 



— " Damping " in Testing, 675 



— Electrolytic. 670 



— Freezing -point, 404 



— Malleable Cast, 672 



— Meteoric, 785 



— with Sulphur, Alloys, 405 

 Iron-carbon Alloys, Decarburisation, 673 



— Equilibrium, 114 



— System, Influence of Manganese on. 403 

 Iron-phosphorus-carbon System, 670 

 Iron-phosphorus-System, 670 



Iron silicon-carbon Alloys, 671 

 Irritability of Seed Plants. See Contents, 



xxii 

 Isgrove, A.. Memoir on Eledone, 712 

 Isoetes, Anatomy, 474 

 Isopod, New Mediterranean, 45 

 Isopods, Land, of Lundy Island, 720 



