INDEX. 



455 



Insects, parts of, for examination, 288. 



proboscis, 301. 



stings, 312, 



tongues, 275, 383. 



■ uses of, 296. 



wings, 299. 



Internal parts of the body, 360. 

 Isis hippuris, 169. 

 Isthmia enervis, 161. 

 Ixodidie, 333. 



Jackson's Mr., micrometer, 39. 

 Johnston, Dr., on sponges, 178. 

 Jones Mr. Wharton, on non-striated 



muscular fibre, 371. 

 on the circulation in frog's foot, 



363. 



King, Mr., on polarised light, 110. 

 Knives, Quekett's and Valentin's, 75. 

 Kiillilcer on the muscles of the skin, 371. 



Lankester, Dr., on sponges, 179. 

 on the distinction between plants 



and animals, 179. 

 Leech, medicinal, 275. 

 Leeuwenhoek's microscope, 5. 

 Lenses, achromatic, 21. 



chromatic aberration of, 21. 



Coddington, 26. 



concavo-convex, 19, 



condensing, 64. 



different forms of, 14. 



double convex, 20. 



meniscus, 20. 



method of tracing progress of rays 



through, 14. 



periscopic, 26. 



plano-convex, 18. 



refraction of light through, 14. 



spherical aberration of, 17. 



Stanhope, 27. 



Lepidoptera, 304. 

 Lepismidse, 323. 

 Lepralia, 226. 

 Libellulidae, 299. 

 Lieberkhun's microscope, 4. 



specula, 65. 



Life, theory of animal, 344. 

 Limneus stagnalis, 263. 



Linnaeus on drone- fly, 296. 

 Lister's lenses, 10. 

 Louse, 327. 

 Lucernaridffi, 222. 



campanulata, 222. 



Lycosidae, 285. 



MADREP0IIID.E, 224. 

 Marine vivaria, 243. 

 Micrometers, 38. 

 Microscope, Baker on the, 8. 



Baker's student's, 50. 



' Bonnani's, 7. 



compound, 29. 



Huyghenian eye-piece of, 36. 



Lieberkhun's, 4. 



Powell and Leland's, 51. 



Ross's, body of, 35. 



Ross's large compound, 47. 



Ross's small compound, SO. 



simple, 27. 



simple for dissections, 27. 



Warington's, 446. 



Mollusca, 253. 



Monads, 142. 



Mosses, 405. 



Moths and butterflies, 304. 



Mulder on the vegetable cell, 398. 



Muscular fibre, 369. 



NAVICUL.E, 151. 



Quekett on, 234. 



Nerves, 371. 

 Newport on Moths, 305. 

 Newt, 391. 

 Nicols' prism, 107. 

 Nitella, 432. 

 Noctiluca miliaris, 141. 

 Notamia, 238. 



Object-Glasses, 32. 



Ross's, 42. 



Objects, Shadbolt on collecting, 95. 



mounting and preserving, 77. 



Boys on mounting, 80. 



On collecting salt-water specimens, 267. 



Ophiuridse, 251. 



Osborne, Rev. S. G., on fungi in the air, 



401. 

 Owen, Professor, on animalcules, 176. 



