INDEX. 



781 



his researches on Volvox, 257, 

 258 ; on Stephanosphsera, 259 ; on 

 Sphaeroplea, 332, 333 ; on repro- 

 duction of Rotifera, 476. 



Coleoptera, integument of, 654 ; an- 

 tennae of, 665, 666 ; mouth of, 

 667. 



Coleps, voracity of, 456. 



Collection of Objects, general direc- 

 tions for, 235—238. 



Collins, Mr., his Harley Binocular, 

 74 — 76 ; his Eye-piece caps, 74 ; 

 his Aquarium Microscope, 85 ; 

 his Graduating Diaphragm, 107, 

 111 ; his Air-pump, 216 note. 



Collomia, spiral fibres of, 398. 



Colonial nervous system of Polyzoa, 

 579, 580. 



Colourless corpusclesof Blood, 711, 

 712. 



Columella of Mosses, 375. 



Comatala, metamorphosis of, 573 — 

 575. 



Compound Microscope, optical 

 principles of, 23—27; mechanical 

 construction of, 56, 57 ; Third- 

 Class, 57— 64; Second-Class, 64— 

 75; First-Class, 76—82; for Spe- 

 cial purposes, 82 — 88. 



Compressorium, 133 — 135 ; use of, 

 153, 154. 



Concave lenses, refraction by, 8. 



Conceptacles of Marchantia, 367, 

 368. 



Concretions, calcareous, 774, 775. 



Condenser, Achromatic, 107 — 111; 

 use of, 157—160. 



Hemispherical, 113, 114. 



for Opaque objects, or- 

 dinary, 120, 121 ; Bull's-eye, 121, 

 122 ; mode of using, 161 — 163. 



Confervacece, 330 ; self-division of, 

 330, 331 ; zoospores of, 331, 332 ; 

 sexual reproduction of, 332 —336. 



Conifer ce, peculiar woody fibre of, 

 402 ; absence of ducts in, 404, 

 409 ; fossil, 752. 



Conjugates, 334, 336. 



Conjugation, of Palmoglaea, 245 ; 

 of Desmidiacea}, 265 — 267; of Dia- 

 tomacese, 285 — 287 ; of Conjuga- 

 teae, 334, 335 ; (supposed) of Acti- 

 nophry s, 447 ; of Gregarinida, 

 449 : of Infusoria, 463—465. 



Connective Tissue, 716 ; corpuscles 

 of, 692, 715, 716. 



Conockilus, 475. 



Contractile vesicle, of Volvox, 252, 

 253 ; of Actinophrys, 441 ; of In- 

 fusoria, 457. 



Conversion of Relief, 29, 30—37. 



Convex lenses, refraction by, 4 — 8 ; 

 formation of images by, 9. 



Copepoda, 640. 



Coquilla-nut, cells of, 396. 



Coral, 552. 



Corallines, true,350 ; Zoophytic,540. 



Cordylophora, 538, 539. 



Cork, 413. 



Corn, blights of, 362, 363. 



Corn-grains, husk of, 433. 



Corns, structure of, 720. 



Corauspira, 489. 



Corpuscles of Blood, 709—713. 



Correction of Object-glasses, for 

 Spherical Aberration, 10, 11 ; for 

 Chromatic Aberration, 13 — 16 ; 

 for thickness of covering glass, 

 16—18, 149—152. 



Corynactis, thread-cells of, 554. 



Corynidce, 537—539. 



Coscinodiscece, 297, 298. 



Cosmarium, swarming of granules 

 in, 262; self -division of, 263; 

 conjugation of, 266 ; development 

 of, 267. 



Crab, shell-structure of, 648, 649 ; 

 metamorphoses of, 649, 650. 



Crabro, integument of, 655. 



Crag-Formation, 759. 



Cricket, gastric teeth of, 671 ; 

 sounds produced by, 679. 



Crinoidea, skeleton of, 563 ; meta- 

 morphosis of, 573 — 575. 



Cristatella, 582. 



Cristellaria, 500. 



Crouch, Mr., his Educational Mi- 

 croscope, 59, 60 ; his Student's, 

 61 ; his Student's Binocular, 71 ; 

 his Adapter for Beck's Side-Re- 

 flector, 123. 



Crusta Petrosa of Teeth, 698—700. 



Crustacea, 636 — 651 ; lower forms 

 of, 636 — 638 ; Entomostracous, 

 638—645 ; Suctorial, 645, 646 ; 

 Cirrhiped, 646 — 648; Malacostra- 

 cous, 648 — 650 ; Decapod, shell 

 of, 648 — 658 ; metamorphoses of, 

 649—650. 



Cryptogamia, plan of structure of, 

 384, 385 ; see Protophyta, Algaa, 

 Mosses, &c. 



Crystallization, Microscopic, 768 — 

 774. 



Ctenoid scales of Fish, 701, 702. 



Ctenosomata, 581. 



Curculionidce, integument of, 655, 

 660 ; foot of, 680. 



Cuticle, of Animals, 718 ; of Equi- 

 setacese, 383; of Flowering Plants, 

 417-424. 



Cutis Vera, 717. 



