INDEX. 



ABEBRATION, CHROMATIC, 26. 



of lenses, 21. 



spherical, 26. 



Abraham's reflecting prism, 172. 

 Absorption bands, 128. 

 Acalephae, 491. 

 Acarina, 632. 

 Acarus beetle, 455. 



cloth moth, 641. 



- domesticus, 637. 



of dog, 634. 



farinse, 639. 



of fly, 641. 



of fowl, 640. 



of rat, 634. 



sacchari, 638. 



scabiei, 635. 



of swallow, 639. 



Achetina, 627. 

 Achnanthes Longipes, 420. 

 Achorion, 296. 

 Achromatic condenser, 166. 



corrections, 40. 



illuminator, 167. 



object-glasses, 42. 



Acineta-form infusoria, 401. 



vorticella, 447. 



Acineta tuberosa, 411, 449. 

 Actinia actinozoa, 465. 



rubra, 483. 



bellis, 484. 



Actiniforum zoophytes, 485. 

 Actinophrys sol, 374. 

 Actinotrocha, 578. 

 Actinozoa, 485. 

 Adams' microscope, 10. 

 Adipose tissue, 693. 

 Adulteration of food, 345. 

 2Ecistes, 451. 

 ^cidium, 293. 

 Agates, 399. 



Alcyonella stagnorum, 526. 

 Alcyonidje, 489, 524. 

 Alcyonium digitatum, 489. 



polypidoms, preparation of, 509. 



Alder, section of, 334. 

 Algae, development of, 269. 

 Alkaloids, sublimation of, 731. 

 Amici's microscopes, 12. 



prisms, 82. 



Amphistome conicum, 565. 

 Amphitetras, 416. 



Amoeba, 373. 



Amoeboid state of volvox, 277. 

 Anacharis alsinastrum, 821. 

 Analysis, spectrum, 786. 

 Angle of aperture, 44 



of incidence, 16. 



of refraction, 17. 



mode of measuring, 45. 



Anguillulae, 571. 

 Anguinaria spatulata, 520. 

 Animalcule, snn, 874. 

 Animalcules, 402. 



cage, Varley's, 195. 



collecting, 193. 



history of, 4C3. 



infusorial, 414. 



Animal cell, 659. 



action of cilia in, 671. 



bodies, injecting, 231. 



cells, change into tissues, 665. 



cellular membrane, 692. 



connective tissue, 662. 



elementary substance, 659. 



epithelium, 668. 



fibrous tissue, 694. 



kingdom, division of, 866. 



life, 655. 



structure, 661. 



structure, mode of investigating, 



724. 



tissues classified, 692. 



tissue consolidated, 702. 



tissues, staining, 225. 



Annelida, 575. 



Annulosa, 559. 



Anobium, 633. 



Antennae of insects, 607. 



Amyot's finder, 188. 



Aphides, 613. 



Aphrophora bifasciata, 615. 



Aplanatic doublet lensj 26. 



Aplysia, 529. 



Aquatic box, 194. 



Arachnida, 631, 644. 



Arachnoidiscus, 432. 



Archer on amoeboid bodies, 277. 



Arcella acuminata, 372. 



Arenicola, 576. 



Aristophanes, microscope known to, 2. 



Artemise, 557. 



Articulata, 579. 



Asci of lichens, 306. 



C 



