INDEX 



II5I 



EPI 



PER 



Epidermis, 1041, 1042 ; method of ex- 

 amining, 1043 



Epidote, 1076 



Epilobium, emission of pollen-tubes, 722 



Epipactis, pollen-tubes of, 723 



Epiphlceum, 708 



Epispore of Mucorini, 642 



Epistome of Polyzoa, 909; of Actino- 

 trocha, 950 



Epistylis, collecting, 527 



Epithelium, 1043, 1044 



Epithemia, conjugation of, 599; zygo-*- 

 spores of, 599 



turgida, 604 

 Equiconcave lens, 22 

 Equilucent zones of light, 368 

 Equisetacece, 680 ; in coal, 1084 

 EquisetitmJ spores and elaters of, 681 ; 



epiderm of, 715 ; silex in, 715 

 Equitant leaves of Iris, &c., 717 

 Erecting binocular, Stephenson's, 100 



prism, Stephenson's, 101 

 Ergot, 644 



Erica, seeds of, 724 



Eristalis, eye of, 987 ; antennae of, 988 



Error of centring, 389 



Er/jtJiropsis agilis, eye-spot of, 775 



Eschara, calcareous polyzoaries of, 909 ; 



extension of perivisceral cavity, 927 

 Ether as a solvent, 517 

 Ether-freezing microtome, Hayes's, 472 ; 



Cathcart's, 474 



Ethmosphcera siphonophora, 850, 851 

 Eucalyptra vulgaris, 669 

 Eucopepoda, 965 note 

 Eucyrtidium elegans, 847, 852 



Mongolfieri, 847 



tubulus, 847 



Eudorina, sexual process of, 557 



Euglena, 545, 765 



Euglypha alveolata, reproduction of, 

 746 



Euler's microscope, 148 



Euler on achromatic microscopes, 147 



Eunotia, 604 



Eunotiece, characters of, 604 



Euphorbiacece, laticiferous tissue of, 695 



Euphrasia, micropyle of, 723 



Euplectella aspergillum, 860 note 



Eupodiscecs, characters of, 612 



Eurotiiim repens, 643 



Evening primrose, emission of pollen- 

 tubes, 722 



' Exclamation markings ' on scales, 978 



Excretory organ of Rotifera, 789, 790 



Exner (.), on the image in eye of 

 Lampyris, 984 



Exogenous stems, 700 



stem, structure of, 708 



and endogenous stems contrasted, 709, 

 710 



Exogens, nbro-vascular bundles, 697, 

 698 ; medullary sheath of, 698 ; spiral 

 vessels in, 698 



Exoskeleton of decapods, 968 



Exospores of mosses, 672 ; of ferns, 677 ; 

 of Hymenomycetes, 648 



Extinction, straight, 1079 



angle, measurement of, 1079 



Extine of pollen-grains, 720; markings 



on, 720 

 Eye, accommodation of, 88 



of Pecten, 940; of Onchidium, 941; 

 of slug, 941 ; of snail, 941 ; of arthro- 

 pod, structure of, 983 



Eye-glass of compound microscope, 36 

 39 



Eye-lens, 376 



Eye-piece, 375-381 ; Abbe's compensa- 

 tion, 40, 378 ; Huyghenian, 40 ; Kell- 

 ner's, 42, 376; Eamsden's, 43, 378; 

 Campani's, 376 ; Huyghens', 376 ; Nel- 

 son's new Huyghenian, 377 ; Watson's 

 Holoscopic, 379 



binocular, Tolles', 101 ; Abbe's, 102 



Kellner's, as condenser, 196 



micrometer, 271-277, 380 ; orthoscopic, 

 376 ; projection, 380, 381 ; index, 381 ; 

 pointer in, 381 ; diaphragms in, 381 



stereoscopic, Abbe's, 102 

 Eye-pieces, classification of, by Abbe, 34 ; 



compensating, 34, 35, 378 ; negative, 

 376, 377; positive, 377; solid, 378; 

 searcher, working, projection, 378 

 Eyes on Chiton shells, 941 



compound, of insects, 982, 983 



compound, 982-987 ; simple, 982, JW6 ; 

 preparing, 986 ; mounting, 986 



F 



Faber, inventor of the name microscope 



124, 125 



Falciform young of Goccidia, 752 

 False images, 419 



Farrants's medium, 478, 520 ; for mount- 

 ing insects, 973 

 Farre (A.), on structure of Polyzoa, 908 



note 



Farrella, polyzoaries of, 909 

 Fat, 1045 



Fat-cells, 1018, 1040, 1042, 1045 ; capil- 

 lary network around, 1062 

 Fats, solvents for, 517 

 Feathers, 1029, 1032 

 ' Feather-star,' 900. See Autedon 

 Feeding, mode of, in Actinophrys, 7^s ; 



in sponges, 856 

 Feet of insects, 1000-1002; of spiders, 



1014 



Felspar, decomposition of, 1076, 1077 

 Felspar rock, effect of dynamic meta- 



morphism on, 1077 

 Felspars, zonal structure in, 1073 

 ' Female ' plants of Polytrichum, 671 

 Fermentation of alcohol by yeast, 646; 



by Penicillium, Mucor, &c., 647 

 putrefactive, 661 

 Fermentative action of Fungi, 532 

 Ferns (see Filices), 674 ; in coal, 1084 

 Fertilisation of Phanerogams, 722 

 Fertilisation-tubes of Peronosporece, 63.S 

 Fertilising tube of Dudresnaya, 632 



