1026 



INDEX. 



Lamella, Middle, of Cell-wall, 585. 

 Lamellse of Agaricini, 418. 

 Lamellibranch Foot, Water-pores of, 



212. 

 Lamellibranchs, Absolute Force of 

 Adductor Muscles of, 212. 



, Visual Organs of, 368. 



Lamp, Beck's " Complete," 628. 



, Nelson's, 125. 



, Nelson-Mayall, 286. 



, Eiihe's Microscopical, 810. 



Lampert, K., 55. 



Lancaster, W. J., 464. 



Lang, A., 385. 



Langendorif, O., 40. 



Langerhans, P., 573. 



Lankester, E. R., 205, 367, 375, 728, 931. 



Lanzi, M., 277, 786. 



Larva, New Pelagic, 891. 



Larvse, Aquatic Lejiidopterous, 882. 



, Dipterous, 739. 



, Insect, Gills of, 555. 



of North American Lepidoptera, 



740. 



, Tailed, Eelation of Nervous 



System of, to that of Adult Ascidian, 

 874. 

 Larval Comatulse, Anatomy of, 754. 

 Conditions in Amphibia, Per- 

 manence of, 710. 



Skin in Decapods, Significance of, 



744. 



Theory of the Origin of Cellular 



Tissue, 540. 

 Latent Period in Muscles of Helix, 



870. 

 Latex of Euphorbiacese, 88. 

 Laticiferous Cells of Euphorbiacese, 

 Development of Starch-grains in, 584. 



Tissue of Hevea spruceana, 409. 



of Manihot Glaziovii (Ceark 



Eubber), 409. 

 Lathrop, J. C, 484. 



Latteux's (P.) Injection Apparatus, 648. 

 Lavdowsky, M., 652. 

 Leaf, Apex of, in Osmunda and Todea, 

 923. 



, Comparative Morphology of, in 



Vascular Cryptogams and Gymno- 

 sperms, 922. 

 Leaves, Apparatus in, for Keflecting 

 Light, 587. 



, Assimilative Power of, 589. 



, Causes which Modify the Direct 



Action of Light on, 590. 



of Allium ursinum, Influence of 



Light on Structure of, 775. 



, Pine-, Effect of Light and Shade 



on, 775. 



, Respiration of, in Darkness, 591. 



, Structure of, 769. 



, Transparent Dots in, 769. 



Lecanora hypnum, Thallus of, 605. 



Leclerc, A., 414. 



Lee, A. B., 43. 



Leech, External Morphology of, 896, 



, Medicinal, Action of a Secretion 



obtained from, on Coagulation of 

 Blood, 896. 

 Legal Cases, Photo-micrography in, 



806. 

 Legs of Hemiptera, Pulsating Organs 

 in, 224. 



of Insects, Structure and Function 



of, 734. 



of Oribatidse, Shrinking back of, 



in Mounting, 635. 

 Legumes, Mechanism of Splitting of, 82. 

 Leidy, J., 214, 231, 573. 

 Leitgeb, H., 29, 93. 

 Lemaire, A., 588. 

 Lendenfeld, R. v., 394, 993. 

 Lens, or Lens-system, Proper Defini- 

 tion of Amplifying Power of, 348. 

 ' Lens,' Proposed Resuscitation of, 975. 

 Lenses, Measurement of Curvature of, 



462. 

 Lenticels, 78, 917. 

 Lepidodendron, Sigillaria, and Stig- 



maria. Systematic Position of, 593. 

 Lepidoptera, Malpighian Vessels of, 

 373. 



, Maxillary Palp of, 883. 



, Mouth Organs of, 372. 



, North American, Larvse of, 740. 



Lepidopterous Larvse, Aquatic, 882. 



Leptosira, 102. 



Lesquereux (L.) and James's (T.) 



Mosses of North America, 782. 

 Leucoplastids, 260. 

 Lewis, T. R., 786, 913. 



, W. J., 993. 



Libbey, W., jun., 993. 

 Lichens. See Contents, xxiv. 

 Liclitenstein, J., 374. 

 Lichtheim, L., 424. 

 Liebenberg, A. Ritter v., 583. 

 Lieberkiihns and Paraboloids, 621. 

 Light, Absorption of, and Assimilation, 

 Quantitative Relation between, 590. 



, Action of, on Elimination of 



Oxygen, 257. 



, different Rays of, on 



Elimination of Oxygen, 411. 

 and Heat, Influence of, on Germi- 

 nation of Seeds, 583. 

 Shade, Effect of, on Pine- 

 leaves, 775. 

 , Apparatus in Leaves for Re- 

 flecting, 587. 



■ , Direct Action of, on Leaves, 



Causes which Modify, 590. 



, Effect of, on Cell-division of 



Saccharomyces, 928. 



