618 



INDEX. 



Himoptera, 



Hipparchia janira, 494. ] 



Hirudinidae, 447. 



History, Natural, division of, 262. 



Holland's eye-piece, 33. 



Holothuridae, 389. 



drawing of, life size, 388. 



Hooke's microscope, 7. 



Human body, 527. 



Huxley, T. H., on the cell theory, 536. 



on echinidae, 381. 



on polypifera, 345. 



Huyghenian eye-piece, 47. 

 Hydatids, 444. 

 Hydra, 351. 

 Hydrachnidae, 462. 

 Hydrophilus, 477. 

 Hymenoptera, 498. 



ICELAND spar, 145. 

 Improvements in microscope, 10. 

 India-rubber tree, section of leaf, 230. 

 Infusoria, Ehrenberg's account of, 292. 



fossil, 315. 



history of, 292. 



Infusorial animalcules, 309. 

 Injecting, mode of, 116. 



lower animals, 125. 



Dr. Beale's mode of, 122. 



Injections, transparent, 122. 



various colours, 124. 



Insects, 469. 



changes of, 517. 



commercial importance of, 520. 



dissection of, Swammerdam's, 515. 



distribution of, 470. 



eggs, 485. 



feet, 477. 



mode of mounting, 517. 



mouths, 472. 



parts for examination, 471. 



probosces, 481. 



stings, 487. 



tongues, 472, 479. 



uses of, 482. 



wings of, 485. 



internal parts, 517. 



Iris leaf, 232. 

 Isideae, 378. 

 Isis hippuris, 378. 

 Ixodidae, 462. 



JACKSON'S, Mr., micrometer, 51. 



Jellyfish, 379. 



Johnston, Dr., on sponges, 275. 



on actinia, 365. 



on campanularia, 362. 



Jones, Mr. Wharton, on non-striated 



muscular fibre, 560. 

 on the circulation in frog's foot, 



551. 



KNIVES, Quekett's and Valentin's, 94. 

 Kolliker on the skin, 560. 



I LAMPS, 83. 



' Lankester, Dr., on plants and animals, 



178. 



Leech, medicinal, 447. 

 Leeuwenhoek's microscope, 6. 

 Legg, Mr. S., on polarisation, 153. 

 Lenses, achromatic, 28. 



chromatic aberration of, 26. 



Coddington, 34. 



concavo-convex, 19. 



condensing, 81. 



different forms of, 18. 



double convex, 18. 



meniscus, 20. 



method of tracing progress of raya 



through, 15. 



periscopic, 33. 



plano-convex, 18. 



refraction of light through, 15. 



spherical aberration of, 22. 



Stanhope, 35. 



Lepidoptera, 488. 

 Lepisma, 513. 

 Lepralia, 395. 



nitida, 395. 



Lewes, Mr. G. H., on animal life, 261. 



on physiology, 524. 



on actiniae, 348. 



Libellulidae, 485. 

 Lieberkuhn's microscope, 5. 



specula, 83. 



Life, theory of animal, 524. 



Limax rufus, 413. 



Limnaea stagnalis, 423. 



Limnias ceratophylli, 339. 



Lister's lenses, 12. 



Liver, diseased, 444. 



Liverworts, 205. 



Lobb, Mr., on the polarising axis of 



crystals, 155. 

 Louse, 452. 

 Lucernaridae, 370. 



campanulata, 370. 



Lung capillaries, 552. 

 Lycosidas, 468. 



MADREPORID.PE, 370. 

 Marine vivaria, 406. 

 Melolontha, eye of, 47.5. 

 Mechanical arrangements, 61. 

 Melicerta ringens, 340. 

 Mesogloia vermicularis, 211. 

 Micrometers, 50. 

 Microscope, Baker on the, 10. 



- Baker's, 62. 



- Bonnani's, 8. 



- compound, 38. 



Huyghenian, eye-piece of, 47. 



Lieberkuhn's, 5. 



- Powell and Leland's, 64. 



- Ross's, body of, 46. 



- simple, for dissections, 35. 



- Quekett's, 38. 



- Warington's, 67. 



Miller, Hugh, on fossil plants, 256. 



I 



