INDEX 



I l6l 



MED 



Medullary rays, 705 



in dicotyledons, 702 

 ' Medullary sheath ' of E,xogens, 698 ; of 



dicotyledons. 703 

 Medusa of fresh-water, 863 

 Mcdusce, 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 

 Megasphere of certain Fora mini/era, 



802 

 Megaspores of RhizocarpetB, 681 ; of 



carboniferous trees, 682 ; of Isoetece, 



682 ; of Selaglnellcte, 682 

 Megatherium, teeth of, 1026 

 Megatriclta of Ehrenberg, a phase in 



development of Suctoria, 785 ; Badcock 



on, 785 

 Megazoiispores of Ulothrix,557i of Uh<, 



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 Confervacete, 608 



Membrana putaminis, 1032 



Membranipora, 908, 909 



Membranvporidte, 908 



Mercury nitrate as a test for albuminous 

 substances, 517 



HeridiecE, 604, 616 



characters of, 604 

 Meridian circulars, 588, 604 

 Merismopedia, 547 



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



niuin 

 Mesembryanthemum, seeds of, 724 



- crystallinum, epiderm of, 714 

 Mesucarpus, conjugation of, 549; zygo- 



spore of, 550 



Mesoglcea 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 Lerucea, 966 ; of 



Cirripedia, 967 ; of Mai a cost mm, 



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 Myxcnn i/cctcs, (J3G 

 Microgroinia 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 Euplirasia, 

 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 ; Campaui's, 128 ; Prit- 

 chard's, with Continental fine adjust- 

 ment, 153; Ross'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; Tully's, 149; Ross's early form 

 of, 152 



aquarium, 266-269 



- binocular, Riddell'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 



