INDEX 



IKR 



Irrationality of spectrum, 19, 305 



Isochelae of sponges, 860 



Isoetece, 682 



Isotropism, 1079 



Isthmia, chains and frustules of, 588, 612 ; 

 structure of frustules, 590 note ; divi- 

 sion of, 596 



nervosa, 613 



areolations in, 592 

 Italian reed, stem of, 699 

 'Itch-mites,' 1013 

 Ivory, 1024 



Ixodes, heart of, 1011 



Ixodidce, 1008; integument of, 1010; 



auditory organ, 1011 ; tracheae of, 1011 ; 



characters of, 1012 



Jackson's modification of Ross model, 

 199 ; his eye-piece micrometer, 276 



Janssen (H. and J.), inventors of first 

 microscope, 120 ; their compound 

 microscope, 120 



Jars, capped, for Canada balsam, 477 



Jelly-fish. See Acalephce and Medusce 



Jones's compound microscope, 144, 145 



Jungermannia, 668 



Jung's (Thoma's) microtome, 461-469 



K 



Kaolin, 1076 



Karop, his fine adjustment to sub-stage, 

 187 



Karop and Nelson on fine structure of 

 diatoms, 591 note 



Karyokinesis in monads, 763 



Kellner's eye-piece, 42, 376 ; as a con- 

 denser, 196 



Kent (Saville), on contractile vacuoles of 

 Volvox, 552 note ; on Flagellata, 764 



Keplerian telescope, Drebbel's modifica- 

 tion as a microscope, 121 



Keramosphtera Murrayi, 810 note 



Keratose network of sponges, 855 ; pre- 

 paration of, 857 



Kidneys of Vertebrata, 1047 



King-crab, 957 



Kirchner, on the obspores of Volvox, 

 556 



Klebahn, on formation of auxospores of 

 diatoms, 601 



Klebs, on mucilaginous sheath of des- 

 mids, 580 ; on movement of desmids, 

 580 



and Biitschli, on the ' cilia ' of Dino- 

 flagellata, 770 



Klein, on Volvox, 556 note 



Knife, special, for microtome, 462 



Koch's method of sectionising corals, 

 878 



Kowalevsky, on development of ascidians, 

 917 note 



Krukenberg,on digestion in sea-anemones, 



LE& 



Kiitzing, on Palmodictyon, 559 ; on struc- 

 ture of frustules of diatoms, 590 ; his 

 classification of diatoms, (>(>:'> 



Labarraque's fluid for bleaching vege- 

 table substance, 514 



Labels, permanent, 523 



Labyrinthic structure of CyclamtniiHi, 

 816; olFarkeria, 818 



LabyrintJiodon, tooth of, 1091 



Lacunae and canaliculi of bone, misinter- 

 pretation of, 428 



of bone, 1019-1022 ; dimensions of, in 

 various animals, 1022 



relation of size to that of blood cor- 

 puscle, 1022 



Lagena, 796, 819 

 Lagenida, 819 

 Laguncula, 906, 908, 950 



stolon of, 904 ; polypides of, compared 

 with Clavellinidce, 914 



repens, anatomy of, 904, 905 

 ' Lamella.' of corals, 878 



of Hymenomycetes, 648 

 Lamellibranchiata, shell of, 919 

 Lamellicornia, antennae of, 988 

 Laminaria, 626, 627 

 Laminariacece, 627 



Lamna, tooth of, 1024 



Lamp, Nelson's. 404; Beck's 406; 



Baker's, 407 

 Lampyris, antennae of, 988 



splendidula, photograph through eye 

 of, 984 



Land-crab, young of, 969 



Lankester (E. Ray), on Bacteria, 652 ; on 

 movement of gregarines, 750 ; on 

 Hcemamcebidce, 752 note ; on iiitra- 

 cellular digestion in Limnocodium, 

 868 



Lantern-flies, wings of, 999 



Lapis lazuli, 1095 



Larva of Echinodermata, 896 ; of As- 

 teroidea, 898 ; of Echinoidea, 898 ; of 

 Ophiurvidea, 898 ; of Crinoidea, 900 ; 

 of ascidians, 916 ; of fly, 1007 ; of 

 Acarina, 1009 



Latex of Phanerogams, 695 



Lathrcea squamaria, embryo of, 728 



Laticiferous tubes, free-cell formation in, 

 534 



tissue of Phanerogams, 695 

 Laurentian rocks, 837, 842 



' Laver,' or green seaweed, 559 



Lawrence's glycerin jelly, 519 



Leaves, epiderm of, 712 ; internal struc- 

 ture of, 716 ; mode of preparation for 

 examination of, 718 



Leech, 956 



Leeuwenhoek's simple microscope, 132 



Legg's method of selecting Foraminifera, 

 844 



Legs of insects, 1000, 1002 ; of Acarina, 

 1008, 1010 



