758 



INDEX. 



Insects' eggs, 602. 



eyes, 584. 



feet, 5S7. 



hairs, tenent, 539. 



heads, 582. 



itch, 635. 



injecting, 240. 



ovipositors, 616. 



preparing and mounting, 590, 64S. 



proboscis, 599. 



spiracles, 586. 



stings, 619. 



tongues, 5S2, 607. 



transformations of, 64S. 



wings of, 597. 



Interpretation, errors of, 67. 

 Intercellular substance, 662. 

 Iodo-quinine, 151. 

 Iris-leaf, 336. 

 Isthmia enervis, 432. 

 Ivory nut, section of, 350. 

 Ixodidae, 642. 



Jackson's micrometer, 51. 



Jelly-fish, 491. 



Johnstone, Dr., on sponges, 385. 



on hydra, 471. 



on campanularia, 4S1. 



Jones, Wharton, on non-striated mus- 

 cular fibre, 698. 



Eymer, on the coretha phuni- 



eornis, 600. 

 Jungermannia bidentata, 310. 



Kettledrum condenser, 174. 

 Kelner eye-piece, 78. 

 Knives for dissecting, 119. 

 Kblliker on the muscles of the skin, 



69S. 

 Kiitzing on vegetables and animals, 



256. 

  on diatomaceae, 417. 



Ladds's microscopes, 84. 

 Lamps, 184. 

 Lamp-shells, 535. 



Lankester, E. R., on gregarina of earth- 

 worm, 370. 

 Lathe for polishing, 209. 

 Leaf-insect, 613. 

 Leech, medicinal, 573. 

 Leeuwenhoek's microscope, 6. 

 Lenses, achromatic, 28. 



chromatic, aberration of, 26. 



Coddington, 34. 



concavo-convex, 19. 



condensing, 183. 



correction of, 28. 



curvature of, 22. 



double convex, 18. 



forms of, 18. 



magnifying power of, 29. 



> meniscus, 25. 



- — tracing rays through, 17. 



Lenses, periscopic, 33. 



plano-convex, 24. 



refraction of liccht through, 15. 



spherical aberration of, 26. 



Stanhope, 35. 



Lepidoptera, eggs of, 605. 



tongue of, 608. 



wing- scales of, 609. 



Lepisma. 529. 



scale of, as a test, 611. 



Lepralia nitida, 517. 



Leu chart on echinorhynchus, 571. 



Lewes on actinias, 467. 



on life, 655. 



thread cells, 467. 



Libellulidae, wings of, 597. 



Lichens, 304. 



Lieberkuhn, Dr. N., on gregarina, 369. 



microscope, 5. 



on spongilla, 389. 



Life, animal. 655. 

 Light, diffraction of, 63, 



polarisation of, 132. 



Limax rufus, 529. 

 Limnsea stagnalis, 545. 

 Limnias ceratophylli, 45S. 

 Lister's lenses, 13. 



achromatic corrections, 40. 



List of objects, Wheeler's, 253. 



Live-box, 194. 



Liver, diseased, 567. 



Liverworts, 308. 



Lobb, Mr., on polarising crystals, 145 



on the illumination of test objects, 



61. 



micrasterias, 279. 



Lob-worm, 576. 



Loligo, palate of, 541. 



Lophopus crystallum, 525. 



Loven on mollusca, 538. 



Louse, 633. 



Lubbock, Sir J., on the eggs of insects, 



605. 



on aquatic insects, 626. 



Lucernaridse, 493. 

 Luidia fragilissima, 496. 

 Lung, capillaries of, 690. 

 Lymphatic, vessels of, 669. 



Madreporice, 4S6. 



Maddox, Dr., wire clip, 214. 



Magnifiers, hand, 33. 



Magnifying power of single lenses, 10 



of object-glasses, E.oss's, 55. 



Powell's, 56. 



Maltwood's finder, 189. 

 Maple-aphis, 613. 

 Marchantia polymorphia, 308. 

 Mechanical arrangements, 70. 

 Medusa?, 492. 



Meissner on the micropyle, 603. 

 Melicerta ringens, 459. 

 Melolantha, eye of, 585. 

 Melting vessel, 233. 

 Mercurial injections, 239. 





