INDEX 



II5I 



EPI 



Epidermis, 1041, 1042 ; method of ex- 

 amining, 1043 



Epidote, 1076 



l-:/iilobium, emission of pollen-tubes, 722 



l\/iipactis, pollen-tubes of, 7'23 



Epiphlceum, 708 



Epispore of Miicorini, 642 



Epistome of Polyzoa, 909; of Actino- 

 troclia, 050 



Epistylis, collecting, 527 



Epithelium, 1043, 1044 



Epithemia, conjugation of, 599; zygo- 

 spores of, 599 



turgid a, 604 

 Equiconcave lens, 22 

 Equilucent zones of light, 368 

 l''.ijiiini-tiici'ii', 680; in coal, 1084 

 Equisetum,' 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 



Erythropsis 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 



Etltmosplufra siplionopliora, 850, 851 

 Eucalyptra vulgar is, 669 

 Eucope2)of1a, 965 note 

 Eucyrtidiuiii elegans, 847, 852 



Mongol fieri, 847 



- tubulus, 847 



Eudorina, sexual process of, 557 



Euylena, 545, 765 



Euglijpha- alveolata, reproduction of, 

 746 



Euler's microscope, 148 



Euler on achromatic microscopes, 147 



Eunotia, 604 



Eunotiecp, characters of, 604 



Enp]n'bice(e, laticiferous tissue of, 695 



Eiipltrasia, micropyle of, 723 



EuplecteUa ii.i/>rrgiUt{i, 860 note 



Eupoilisrece, characters of, 612 



Eurotiitm repcns, 643 



Evening primrose, emission of pollen- 

 tubes, 722 



' Exclamation markings ' on scales, 978 



Excretory organ of Botif era, 789,790 



Exner (S.i, on the image in eye of 

 Lanijii/rin, 984 



Exogenous stems, 700 



stem, structure of, 708 



and endogenous stems contrasted, 709, 

 710 



Exogens, fibre-vascular bundles, 697, 

 698 ; medullary sheath of, 698 ; spiral 

 vessels in, li'.is 



Exoskeletoii of decapods, 968 



Exospores of mosses, 672 ; of ferns, 677 ; 

 of Hymenomijcetcs, 648 



FER 



Extinction, straight, 1079 



angle, measurement of, 1079 



Extine of pollen-grains, 720 ; markings 

 on, 720 



Eye, accommodation of, 88 

 -of Pecten, 940 ; of Onrhidii/iii, 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 ; Ramsden'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, 

 37(5 ; 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, 986 ; 

 preparing, 986 ; mounting, 986 



Faber, inventor of the name microscope 



124, 125 



Falciform young of Coccidia, 752 

 False images, 41'.i 



Farravits' s medium, 47s, 520 ; for mount- 

 ing insects, 973 

 Farre (A.), on structure of Polygon, 90s 



note 



Furrelhi, 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 Antedon 

 Feeding, mode of, in Actinophrys, 738 ; 



hi 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, 107: 1 

 'Female' plants of Polijtriclui in, 671 

 Fermentation of alcohol by yeast, 646 ; 



by Penirillinm, Mucor, &c., 647 

 - putrefactive, 661 

 Fermentative action of Ftn/cji, 532 

 Ferns (see Fili<:i's}, 674 ; in coal, 1084 

 Fertilisation of Phanerogams, 722 

 Fertilisation-tubes of Peronosporece, 638 

 Fertilising tube of Dudresnaya, 632 



