INDEX 



MED 



Medullary rays, 705 



in dicotyledons, 702 

 ' Medullary sheath ' of Exogens, 698 ; of 



dicotyledons, 703 

 Medusa of fresh-water, 863 

 Medusa t mounting, 448 ; of Hydroids, 



868 ; naked-eyed, 868 ; development 



of, 874 ; alternation of generations in, 



877 ; nerves of, 1052 

 Medusoids, collecting, 529 

 Megalopa, 970 



Megaloscleres, 859 f 



Megasphere of certain Foraminifera t 



802 

 Megaspores of Rhizocarpece, 681 ; of 



carboniferous trees, 682; of Isoetece, 



682 ; of Selaginellece, 682 

 Megatherium, teeth of, 1026 

 Megatricha of Ehrenberg, a phase in 



development of Suctoria, 785 ; Badcock 



on, 785 

 Megazoospores of Ulothrix, 557; of Ulva, 



561 ; of Scenedesmus, 566 

 Megerlia lima, shell of, 927 

 Melanosporece, 625 

 Meleagrina, 919, 922 



margaritifera, 923 



Melicerta, collecting, 527 ; in confine- 

 ment, 528 



Melicertidce, 791 



Melolontha, eye of, 987 ; antennae of, 

 988 ; spiracle of larva, 996 



vulgaris, eye of, 983 



Melosira, frustules of, 588, 594 ; auxo- 

 spores of, 595, 600 ; sporules of, 597 ; 

 zygospore of, 600 



ochracea, 608 



subflexilis, 594, 595 



varians, 594, 595 ; endochrome of, 

 598 



Melosirece, characters of, 608; resem- 

 blance to Confervacece, 608 



Membrana putaminis, 1032 



Membranipora, 908, 909 



Membraniporidte, 908 



Mercury nitrate as a test for albuminous 

 substances, 517 



Meridiece, 604, 616 



characters of, 604 

 Meridian circular e, 588, 604 

 Merismopedia, 547 



' Mermaid's fingers,' 879. See Alcyo- 



nium 

 Mesembryanthemujn, seeds of, 724 



crystallinum, epiderm of, 714 

 Mesocarpus, conjugation of, 549; zygo- 

 spore of, 550 



Mesogloea of Hydra, &c., 864 note 

 Mesophlceum, 708 

 Metal case for imbedding, 498 

 Metamorphism, dynamic, 1077 

 Metamorphism of rock-masses, 1076, 



1077 ; of limestones, 1090 

 Metamorphosis of Lerncea, 966 ; of 



Cirripedia, 967 ; of Malacostraca, 



969 

 Metazoa, 727, 855 



MIC 



Meteorites in oceanic sediments, 1093 



Metschnikoff, on acinetan character of 

 Erythropsis, 775 ; on intracellular di- 

 gestion, 863 ; on phagocytes, 1037 note 



Mica, 1077 



Michael's (A.) opalescent mirror, 194 



Micrasterias denticulata, binary divi- 

 sion of, 583 ; form of cell of, 585 



Micro-chemical analysis, 1102 



- method of, 1102 



Micro-chemistry in petrology, 1082, 1083 ; 

 of poisons, 1103 



Micrococci, form of, 653 



Microcysts of Myxomycetes, 636 



Microgromia socialis, 735 



Microlites, 1072 ; in glass-cavities, 1074 



Micrometer, Cuff's, 142 



use of, 274 



eye-piece, 271 



Nelson's new, 271, 272, 273 ; Zeiss's, 

 272; Jackson's, 276 



Micrometers, 270-277 



Micrometry by photo-micrography, 277 



Micron, a, 82 note, 460 



Micro-petrology, 1066 



' Microplasts ' of Bacterium rubescens, 

 660 note 



Micropyle in ovule, 685 ; of Euphrasia, 

 723 ; in orchids, &c., 723 



Microscleres, 859, 860 



Microscope, Mayall on the, 117 ; history 

 and evolution of the, 117-269 ;" inven- 

 tion of, 120 ; inventor of the name, 124 ; 

 essentials in, 157-194 ; adjustments in, 

 159-175 ; stage of, 175-184 ; sub-stage 

 of, 184-191 ; mirror of, 191-194 ; desi- 

 derata in, 261-263 ; preservation of, 

 436 



Galileo's, 127 ; Campani's, 128 ; Prit- 

 chard's, with Continental fine adjust- 

 ment, 153; Boss's 'Lister' model, 

 153 ; Powell's (H.), 155 ; James 

 Smith's, 155 



achromatic, Euler on, 147 ; Martin's, 

 147; Chevalier's, 148, 150; Selligue's, 

 148; Tally's, 149; Ross's early form 

 of, 152 



aquarium, 266-269 



- binocular, Eiddell's, 97; Nachet's, 

 98; Wenham's stereoscopic, 98; Ste- 

 phenson's, 100, 248, 455 ; Greenough's, 

 102,250; Powell and Lealand's, 105; 

 Cherubin d' Orleans', 130 ; Ross's, 196 ; 

 Ross-Zentmayer's, 199; Rousselet's, 

 245 ; Sorby's spectrum, 327 



chemical, Bausch and Lomb's, 263, 264 



compound, 36, 39-42, 120, 125 ; con- 

 struction of, 39 ; path of light through, 

 40; Rezzi on invention of, 125 ; Jans- 

 sen's, 120 ; Hooke's, 128 ; de Mon- 

 cony's, 128 ; Divini's, 129 ; Marshall's, 

 135; Hertel's, 139; Joblot's, 139; Cul- 

 peper and Scarlet's, 140; Martin's, 

 140; Adams's variable, 142, 148; 

 Jones's, 144, 148 



- comparison of English and Conti- 

 nental models, 254-261 



