INDEX 



LEG 



Leguminosce, seeds of, 685 



Leiosoma palmacinctum, 1008 ; hairs of, 



1010 

 Leitz's microscopes, 206, 227 



bull's eye, 330 



objectives, 374 



Lens, spherical, 12 ; biconvex, 12, 13 ; 

 plano-concave, 13; diverging meniscus, 

 13 ; plano-convex, 13, 15, 22, 37 ; con- 

 verging meniscus, 13 ; biconcave, 13 ; 

 plano-convex, focal length of, 15 ; 

 crossed biconcave, 16; crossed bicon- 

 vex, 16 ; equiconvex, 16, 22 ; Stanhope, 

 37 ; Coddington, 37 ; Briicke, 38 



from Sargon's palace, 119 



invention of, 119, 120 



achromatic, Charles's, 148 ; Barlow's, 

 149 



Lenses, refraction by, 10, 25 



homogeneous immersion, of Powell 

 and Lealand, 30 ; of Zeiss, 29 



fluorite ; for apochromatic objectives, 

 35 



combination of, 37 



resolving power of, 64, 382 ; amplify- 

 ing power of, 25, 26 



testing by Diatoms, 389 

 Lepadidce, 967 

 Lepidium, seeds of, 724 

 Lepidocyrtus curvicollis, scales of, 979 

 Lepidodendra, 682, 1084 

 Lepidoptera, scales of, 975, 976 ; wings 



of, 981, 999 ; scales of, mounting, 981, 



982 ; eyes of, 987 ; antennae of, 988 ; 



mouth-parts, 992; eggs of, 1005 

 Lepidosteus, bony scale of, 1022, 1028 

 Lepidostrobi, 682 



Lepisma saccharina, scales of, 976, 977 

 Lepismidce, 979 

 Lepralia, 909 ; mode of growth in, 904 ; 



extension of perivisceral cavity of, 



927 



Leptodiscus (ally of Noctiluca), 769 note 

 Leptogonium scotinum, 649 

 Leptothrix, form of, 653 

 Leptus autumnalis, 1013 

 Lerncea, 965 note, 966 

 Lessonia, 627 



Lettuce, laticiferous tissue, 695 

 Leucite, mineral inclusions in, 1075 ; 



anomalies in, 1078 

 Lever of contact, Ross's, for testing 



covers, 440 

 Libelhda, eye of, 983, 987; respiratory 



apparatus of larva, 997 ; wings of, 



998 



Liber, or inner bark, 708 

 LICHENS, 648-651; fungus-constituents 



of, 651 

 Licmopkora, stipe of, 588, 604 ; flabella 



of, 605 



flabellata, 588, 604 

 Licmophorece, 616 



characters of, 604 ; vittae of, 604 

 Lieberkuehnia, movement of, 732 



paludosa, 733 



Wagneri, 731 



LOM 



Lieberkiihn's microscope, 139 ; his specu- 

 lum, 334-336 



' Ligamentum nuchae,' structure of, 1040 

 Light; refraction of, 2; recomposition 

 of, by prisms, 18 ; convergence of, 18 ; 

 path of, through compound microscope, 

 40; quantity of, 50, 51, 54; emission 

 of, 51, 54 ; quantity of, and aperture, 

 54 note ; cone of, 190 ; monochromatic, 

 321, 417, 418 ; intensity of, necessaries 

 for, 416 



convergent, in petrology, 1070, 1078 

 Lignified tissue, test for, 517 

 Lignites, 1083 



Lignum vitce, wood of, 704 



Lilac, pith of, 687 



Lilium, experiments with pollen-grains 



of, 721 



' Lily-stars,' 900. See Crinoidea 

 Limax maximus, palate of, 930 



shell of, imitated, 1102 



rufus, shell structure of, 928 

 Lime, raphides of, 696 



secreting Algae, 1084 

 Limestone, metamorphism of, 1077 



rocks, 1084, 1085 



Limnceus stagnalis 1 nidamentum of, 

 934 ; velum of, 936 



LimnocaridcB, characters of, 1013 



Limnocharis, seeds of, 724 



Limnocodium, intracellular digestion in, 

 863 



Limpet. See Patella 



Limulus, 957 



Linaria, seeds of, 724 



Lister's struts for support of body, 149 ; 

 his influence on improvement of Eng- 

 lish achromatic object-glasses, 150 ; 

 his zoophyte trough, 348 ; his discovery 

 of two aplanatic foci, 355 ; his note on 

 Chevalier's objectives, 355 ; his influ- 

 ence on microscopical optics, 356 ; his 

 triple-front combination, 360 



Listrophorus, 1008 



Lithasteriscus radiatus, 620 



Lithistid sponges, spicules of, 859' 



Lithocyclia ocellus, 847 



Lithothamnion, 1084 



Lituola, 814 



Lituolce, large fossil forms of, 816 



Lituolida, 814 



Live-box, 346 



Liver, 1047 



Liver-cells, 1048 



' Liverworts,' 665. See Hepaticce 



Lobosa, characters of, 734 ; examples of, 

 742-747 



Lobster, 957; metamorphosis of, 969 



' Lob-worm,' 948 



Loculi, of anthers, 720 



Locust, gizzard of, 993; ovipositors of, 

 1004 



Locusta, eye of, 987 



Loftusia,S18 



Loligo, pigment-cells of, 942 



Lomas (J.), on calcareous spicules in 

 Alcyoniditim, 908 note 



