760 



INDEX. 



Interpretation, errors of, 165. 

 Intercellular substance, 662. 

 Iris-leaf, 336. 

 Isthmia enervis, 432. 

 Ivory nut, section of, 350. 

 Ixodidse, 642. 



JACKSON'S micrometer, 58. 



Jelly-fish, 491. 



Johnstone, Dr., on sponzes, 385. 



on campanularia, 481. 

 on hydra, 471. 



Jones, Wharton, on non-striated 

 muscular fibre, 698. 



Rymer, on the corethra plumi- 

 cornis, 600. 



Jungermannia bidentata, 310. 



KAISER'S glycerine gelatine, 220. 

 Knives for dissecting, 202. 

 Kolliker on the muscles of the skin, 



698. 

 Klitzing on vegetables and animals, 



2?6. 

 - on diatornaeese, 417. 



LADD'S microscope, 115. 



Lamps, Microscope, 190. 



Lamp-shells, 535. 



Lankester, E. R., on Gregarina Lum- 



brici, 870. 



Lathe for polishing, 206. 

 Leaf-insect, 613. 

 Leech, medicinal, 573. 

 Leeuwenhoek's microscope, 6. 

 Lenses, amplification of, 57. 

 angular aperture of, 69. 



chromatic aberration of, 32. 



concavo-convex, 31. 



condensing, 1 98. 



correction of, 63. 



curvature of, 29. 



double convex, 26. 



forms of, 26. 



. magnifying power of, 34. 



meniscus, 29. 



periscopic, 38. 



plano-convex, 28. 



platyscopic, Browning's, 39. 



refraction of light through, 37. 



Lepidoptera, eggs of, 605. 



tongue of, 608. 



witg-scales of, 609. 

 Lepisma, 529. 



scale of, as a test, 166. 



Lepralia nitida, 517. 



Leuchart on echinorhynchus, 571. 



Lewes on actinise, 4t ; 7. 



on life, 655. 



thread cells, 467. 



Libellulidse, wings of, 597. 

 Lichens, 304. 



Lieberkiihn, Dr. N., on gregarina, 

 369. 



on spongiila, 389. 



the speculum of, 187. 



Life, animal, 655. 

 Light, polarisation of, 138. 

 Limax rufus. 529. 

 Limnsea stagnalis, 545. 

 Limnias ceratophylli, 458. 

 Lister's lenses, 13. 



achromatic correction of, 63, 



Liver, diseased, 567. 



Liverworts, 308. 



Lobb on micrasterias, 279. 



Lob-worm, 576. 



Loligo, palate of, 548. 



Lophopus crystallum, 525. 



Loven on mollusca, 538. 



Louse, 633. 



Lubbock, Sir J., on the eggs of i 



sects, 605. 



on aquatic insects, 626. 

 Lucernaridye, 493. 

 Luidia fragilissima, 496. 

 Lung, capillaries of, 690. 

 Lymphatic, vessels of, 669. 



MADREPORID^E, 486. 



Magnifiers, hand, 38. 



Magnifying power of single lenses, 



39. 



of object-glasses and eye- 

 pieces, 57. 

 Maple-aphis, 613. 

 Marehantia polymorphia, 308. 

 MayaH's, Mr. J., semi-cylinder illu 

 minator, 176. 



diaphragms, 186. 



Mechanical arrangements, 70. 

 Medusae, 492. 



Meissner on the micropyle, 603. 

 Melicerta ringens, 459. 

 Melolantha, eye of, 585. 

 Mesoglia vermicularis, 268. 

 Micrasterias, 280. 

 Micrometers, 53. 

 Microscope, the, 1. 



Abbe's binocular, 119. 



Baker's compound, 98 



binocular dissecting, 98. 



student's, 96. 



Beck's popular, 93. 



ideal, 95. 



Brewster's diamond, 11. 



Browning's improved, 99. 



platyscopie, 39. 



Collins's binocular, 107. 



dissecting, 108. 



student's, 106. 



Crouch's, 110. 



Frauenhofer's lenses for, 10, 



G. Adams's, 10. 



Hooke's compound, 7. 



water, 5. 



How's student's, 112. 



Ladd's, 115. 



Lieberkiihn's, 5. 



. Murray and Heath's, 113. 



class, 114. 



Xachet's portable, 115. 



