1152 



INDEX 



FES 



FOK 



Festuca pratenns, paleoe of, 715 

 Fibres and cells of Vertebrates, 1018, 



1019 



Fibro-cartilage, 1019, 1046 

 Fibro-vascular bundles, 697, 708, 710 



of ferns, 074 ; in the ' veins ' of leaves, 

 697 ; of Exogens, 697, 698 ; of Phane- 

 rogams, 700 



Fibrous tissues of Vertebrates, 1019 



tissue, 1038 ; white, 1039, 1040 ; yellow, 

 1040 



Field of eye-pieces, 879 



Field-glass, 40 



Field-lens, 376; applied to eye-lens by 

 de Moncoiiys, 128, 376 ; by Hooke, 128, 

 376 



FILICES, 674-680; stem, structure of, 

 674 ; fructification of, 675 ; prothallium 

 of, 677 ; antherids of, 677 ; archegones 

 of, 677 ; development of, 679 ; apospory 

 in, 680 ; apogamy in, 680 ; alternation 

 of generations in, 680 



' Filiferous capsules.' See Thread-cells 



Finder, 295 ; Maltwood's, 296 



Fine adjustment, 162-175 



applied to the stage by Powell, 

 155 ; by moving the whole body, 162 ; 

 by simply moving the nose-piece, 162, 

 173 ; continental, 162-164 ; Campbell's 

 differential screw, 164; Zeiss's, 166; 

 Eeichert's, 171 ; Watson's lever, 172 ; 

 Swift's vertical side-lever, 173 ; 

 Powell's, 174 



Fire-fly, antennae of, 987 



' Fire-fly,' 984, 988. See Lampyris 



Fish, circulation in tail of, 1057 ; on 

 yolk-sac, 1057 



' Fish-louse,' 966 



Fish-scales, concretions in, 1101 



Fishes, lacunae in bone of, 1022 ; dentine 

 of, 1023 ; cement of teeth in, 1026 ; 

 plates in skin of, 1026; red blood- 

 corpuscles of, 1034, 1035; pigment- 

 cells of, 1043 ; muscle fibre of, 1049 ; 

 gills of, 1063 



Fission in LieberkueJinia, 733; of 

 Monas, 756; of Monosiga, 764; of 

 Codosiga, 764 ; of planarians, 947 



Fissipennes, wings of, 999 



Fixation, 484-487 



Fixing agents : alcohol, 484 ; corrosive 

 sublimate, 484 ; osmic acid, 485 ; picric 

 acid, 485 



Flabella of Licmophora, 605 



Flagella, 532 ; of Bacteria, 652, 658, 659 



Flagellata, 755-771 



experiments on, 761 ; nucleus in, 762 ; 

 karyokinesis in, 763 ; colonial forms, 

 764 



collared, resembling cells of sponges, 

 855 



Flagellate chambers of sponges, 856, 



857 



Flagellum of Noctiluca, 766 note 

 Flat bottle for collecting, 527 

 Flatness of field, 425 

 Flea, presumed auditory organ of, 422 ; 



hairs on pygidium of, as a test, 421 



mounting medium for, 973 

 ' Flesh,' 1048 

 Flint, derivation of, 622 



glass, refractive index of, 5 ; disper- 

 sive power of, 10 ; composition of, 32 



implements found with Orbitolince, 

 824 



Flints, preparation of, 1089 



Floral envelope, 718 



Floridece, 630-632 ; affinities of, 630 



Flosculariadcs, 791 



Floscules in confinement, 528 



' Flowering fern,' sporanges of, 676 



' Flowering plants,' 684. See PHANERO- 

 GAMIA 



Flowers, 718-723 ; Inman's method of 

 preparation, 719 



' Flowers of tan,' 634 



Fluid inclusions in crystals, 1074 



1 Fluke,' 945 



Fluorite lenses for apochromatic objec- 

 tive, 85, 366 



Flustra, mode of growth in, 904 ; gem- 

 mation in, 906 ; number of polypides, 

 908 ; polyzoaries of, 909 ; extensions of 

 perivisceral cavity in, 927 



'Flustrella concentrica, 847 



Fly, various instructive organs to be ob- 

 tained from, 972 ; eye of, facets in, 

 983; proboscis of, 989; circulation in 

 wing of, 994 ; spiracle of, 996 ; areolse 

 on wings of, 998 ; foot of, 1000 



Focal alteration and form of objects, 421 



depth, 38 



distances, by feeling, 177 



length of a plano-convex lens, 15 

 Focke on Navicula and Surirella, 602 



note 



Focus, virtual conjugate, 14, 25 ; princi- 

 pal, 16 ; mean, 17 ; virtual, 22 ; conju- 

 gate, 24 ; depth of, 83, 89 



of lenses, 13, 21, 22 ; chromatic, 16 

 Focussing arrangements, 159-175 

 Fontinalis antipyretica, 671 



Food of Hydra, 685 



Foraminifera, 733, 795-846 



study of, by means of Beck's disc- 

 holder, 339; examination of, 423; 

 wooden slides for mounting, 450; 

 method for sectionismg, 508 note ; de- 

 calcification of, 513 ; structure of, 795 ; 

 chamberlets in, 798, 803, 804, 806 ; 

 cyclical mode of growth in, 798 ; plans 

 of growth, 798, 804 ; porcellanous 

 shells, 799 ; vitreous shells, 799 ; tubu- 

 lation of shell in, 799, 800; rotaline 

 type, 800 ; nummuline type, 800 ; in- 

 termediate skeleton of, 801 ; canal sys- 

 tem of, 801 ; Porcellanea, 801 ; fos- 

 silised forms of, 801, 804, 812, 824, 837 ; 

 dimorphism in, 802 ; secondary septa 

 in, 803 ; Arenacea, 810 ; sandy iso- 

 morphs, 814 ; nodosarine type, 815 ; 

 Vitrea, 819; internal casts, 82:5, 827 

 note ; nummuline series, 826 ; alar 

 prolongations, 830, 831 ; interseptal 



