INDEX. 



999 



Gymnodinium and Peridiiiium, 745. 

 (rymnobperms and Aiigiosperms, 905. 



, Seminal Integuments of, 911. 



Gymnospermy of Conifers, 907. 



H 



Habits and Intelligence of Vcspa ma- 

 culata, 559. 



of tlie Octopus, 854. 



Hfematoxylic Eosin, and its Employ- 

 ment in Histology, 703. 



Hr-craocyanin, a new Substance in the 

 Blood of the Octopus, 164. 



Hairs, Abortion of, on the Legs of 

 certain Caddis-flies, &c., 412. 



Haliphysema Tumanowiczii, 898. 



Halistemma teryestinum, 584. 



Halosphrera, a new Genus of Uuicel- 

 lular Alga;, 458. 



Haptophrya gigantea, a new Opalinid 

 from the Intestine of the Anourous 

 Batrachia, 588. 



HardiTian Ghmd of the Duck, 848. 



Head, Support for, in Drawing with the 

 Camera Lucida, 187. 



Heart of the Crayfish, Action of, 292. 



of the Craytish and Lobster, 423. 



Heat and Light, Action of, on Swarm- 

 spores (Zoospores), 307. 



, Disengagement of, which accom- 

 panies the Expansion of the Male 

 luflorescence of Dioon edule, 752. 



, Influence of, on the Nervous 



Centres of the Crayfish, 714. 



Heliostat, Prazmowski's, 44. 



Heliotropism of Plants, 593. 



Helix aspersa. Segmentation of Ovum 

 in, 40.^, 854. 



pomatia, Cutaneous Absorption 



of, 856. 



, Influence of " Cardiac 



Poisons" on, 857. 



Helminthological Studies, 729. 



Helminthology, 283. 



Hermaphroditism in, and the Spcrma- 

 topliores of the Nephropueustous 

 Gasteropoda, 304. 



in Perlida;, 144. 



of the Isopoda, 720. 



Heteropoda, Auditory Organs of, 401. 



Heteropora, Recent, Occurrence of, 390. 



, recent Species of, 862. 



Hexarthra, Is it not synonymous with 

 Pedalion ? 384, 386. 



High-power Definition, Microscopical 

 Kesearclies in, 784. 



Hippopotamus, Young, Trichinosis in, 

 571. 



Histological Prepar.itions, Size of, 329. 



Histology, Atlas of, Klein and Smith's, 

 700. 



Histology of Phanerogamia. See Con- 

 tents, XV. 



of Vertebrata. See Contents, vii. 



Hoggau, G. and F. E., On the Develop- 

 ment and Retrogression of the Fat- 

 cell, 353. 



Holding Objects beneath tlie Stage, 

 Contrivance for, 466, 624. 



Homogeneous Immersion, 774. 



, Fluid for, Chloride of Cad- 

 mium as, 943. 



, New Fluids for, 332. 



Object-glasses, Note on, 394, 



489, 490. 



Objectives and the Vertical 



Illuminator, 266. 



Objectives, Mixture of Oils 



for, 332. 



, Stephenson's System of, for 



Microscope Objectives, 256. 



Homology of the " Nucule " of Chara- 

 cpa3, 317. 



Hooker, Sir Joseph, on Ihe IModern 

 Development of Micro-botany, 67. 



Hooklets, Barbed, on Spines of a 

 Brachiopod, 553. 



Horny Sponges, Development of, 897. 



Horse -Leech, Abnormal Sexual Organs 

 in, 156. 



" House " of the Phronimida, 719. 



Hudson, C. T., Note on M. Deby's 

 Paper (on Pedalion), 386. 



, On fficistes unibella and other 



Rotifers, 1. 



Hydrachnida, Structure of, 415. 



Hydroid inhabiting Sponges, Spongi- 

 cola fistularis, 431. 



Hydroids, Sexual Products in, Origin 

 of, 66. 



Hydromedusaj, Strange Anomaly 

 among, 278. 



Hydrozoa, Researches into the, 480. 



Hygrocrocis arsenicus, Breb., Organi- 

 zation of, 169. 



Hymenomycetes, Spores on the upper 

 side of the Pileus in, 314. 



I. 



Illuminating Apparatus employed with 



the Microscope, Theory of, 503. 



■ Traverse-lens, 388. 



Illumination, Black-ground, 623. 



, Oblique, 473. 



, Sub-stage, Revolver Immersion 



Prism for, 32. 

 Illuminator, A Catoptric Immersion, 



36. 

 , Formation of the Paraboloid as, 



for the Microscope, 620. 



, Immersion Stage, 837. 



, Vertical, 194. 



