758 



INDEX. 



Insects' eggs, 602. 



eyes, 584. 



feet, 587. 



hairs, tenent, 589. 



heads, 582. 



itch, 635. 



injecting, 240. 



ovipositors, 616. 



preparing and mounting, 590, 648. 



proboscis, 599. 



spiracles, 586. 



stings, 619. 



tongues, 582, 607. 



transformations of, 648. 



wings of, 597. 



Interpretation, errors of, 67. 

 Intercellular substance, 662. 

 lodo-quinine, 151. 

 Iris-leaf, 336. 

 Istlunia enervis, 432. 

 Ivory nut, section of, 350. 

 Ixodidse, 642. 



JACKSON'S micrometer, 51. 



Jelly-fish, 491. 



Johnstone, Dr., on sponges, 385. 



on hydra, 471. 



on campanularia, 481. 



Jones, Wharton, on non-striated mus- 

 cular fibre, 698. 



Rymer, on the coretha plumi- 



cornis, 600. 

 Jungermannia bidentata, 310. 



KETTLEDRUM condenser, 174. 

 Kelner eye-piece, 78. 

 Knives for dissecting, 119. 

 Kolliker on the muscles of the skin, 



698. 

 Kiitzing on vegetables and animals, 



256. 

 on diatomacese, 417, 



LADDS'S microscopes, 84. 

 Lamps, 184. 

 Lamp-shells, 535. 



Lankester, E. B., 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 light through, 16. 



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. 



Leuchart on echmorhynchus, 571. 



Lewes on actiniae, 407. 



on life, 655. 



thread cells, 467. 



Libellulidse, wings of, 597. 



Lichens, 304. 



Lieberkiihn, Dr. N., on gregarina, 369 



microscope, 5. 



on spongilla, 389. 



Life, animal, 655. 

 Light, diffraction of, 68, 



polarisation of, 132. 



Limax rufus, 529. 

 Limnsea stagnalis, 545. 

 Limnias ceratophylli, 458. 

 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. 



MADREPOBID^E, 486. 

 Maddox, Dr., wire clip, 214. 

 Magnifiers, hand, 33. 

 Magnifying power of single lenses, 2! 



of object-glasses, Ross's, 55. 



Powell's, 56. 



Maltwood's finder, 189. 

 Maple-aphis, 613. 

 Marchantia polymorphic, 308. 

 Mechanical arrangements, 70. 

 Medusae, 492. 



Meissner on the micropyle, 603. 

 Melicerta ringens, 459. 

 Melolantha, eye of, 585. 

 Melting vessel, 233. 

 Mercurial injections, 239. 



