784 



INDEX 



Ebner, V. von 444, 683 

 Echinoderms, larval 392; spicules of 



449 

 Echinus 377, 378, 664 

 Eclipse, skeleton of 739 

 Ectosarc 281 

 Eel, growth of. 85 

 Efficiency, mechanical 670 

 Efficient cause 6, 158, 248 

 Eggs of birds 652 

 Eiffel tower 20 



Eight cells, grouping of 381, etc. 

 Eimer, Th. 606 

 Einstein formula 47 

 Elastic curve 219, 265, 271 

 Elaters 489 

 Electrical convection 187; stimulation 



of growth 153 

 Elephant 21, 633, 703, 704 

 Elk. antlers of 629, 632 

 Ellipsolithes 728 

 Ellis, R. Leslie 4, 329, 647; M. M. 



147, 656 

 Elodea 322 

 Emarginula 556 

 Emmel, V. E. 149 

 Empedocles 8 

 Emperor Moth 431 

 Encystment 213, 283 

 Engelmann, T. W. 210, 285 

 Enriques, P. 4, 36, 64, 133, 134, 677 

 Entelechy 4, 714 

 Entosolenia 449 

 Enzymes 135 

 Epeira 233 

 Epicurus 47 

 Epidermis 314, 370 

 Epilobium, pollen of 396 

 Epipolic force 212 

 Equatorial plate 174 

 Equiangular spiral 50, 505 

 Equilibrium, figures of 227 

 Equipotential lines 640 

 Equisetum. spores of 290, 489 

 Errera, Leo 8, 40, 110, 111, 213, 306, 



346, 348, 426 

 Erythrotrichia 358, 372, 390 

 Ethmosphaera 470 

 Euastrum 214 

 Eucharis 391 

 Euchd 509 

 Euglena 376 

 Euglypha 189 



Euler, L. 3, 208, 385, 484, 690 

 Eulima 559 



Eunicea, spicules of 424 

 Euomphalus 557, 559 

 Evelyn, John 652 

 Evolution 549, 610, etc. 

 Ewart, A. J. 20 



Fabre, J. H. 64, 779 



Facial angle 742, 770, 772 



Faraday, M. 163, 167, 428, 475 



Farmer, J. B. and Dig by 190 



Fatigue, molecular 689 



Faucon, A. 88 



Favosites 325 



Fechner, G. T. 654, 777 



Fedorow, E. S. von 338 



Fehling, H. 76, 126 



Ferns, spores of 396 



FertiUsation 193 



Fezzan-worms 127 



Fibonacci 643 



FibriUenkonus 285 



Fick, R. 57, 683 



Fickert, C. 606 



Fidler, Prof. T. Claxton 691, 674. 



696 

 Films, liquid 215, 217, 426 

 Filter- passers 39 

 Final cause 3, 248, 714 

 Fir-cone 635, 647 

 Fischel, Alfred 88 

 Fischer, Alfred 40, 172; Emil 417, 



418; Otto 30, 699 ' 

 Fishes, forms of 748 

 Fission, multiphcation by 151 

 Fissurella 556 

 FitzGerald, G. F. 158, 281, 323, 440, 



477 

 FlageUum 246, 267, 291 

 Flemming, W. 170, 172, 180 

 FHght 24 



FUnt, Professor 673 

 Fluid crystals 204, 272. 485 

 Fluted pattern 260 

 Fly's cornea 324 

 Fol, Hermann 168, 194 

 Folliculina 249 



Foraminifera 214, 255, 415, 495, 515 

 Forth Bridge 694, 699, 700 

 Fossula 390 

 Foster, M. 185 

 Fraas, E. 716 

 Frankenheim, M. L. 202 

 Frazee, 0. E. 153 

 Fredericq, L. 127, 130 

 Free cell formation 396 

 Friedenthal, H. 64 

 Frisch, K. von 671 

 Frog, egg of 310, 363, 378, 382; 



growth of 93. 126 

 Froth or foam 171, 205, 305, 314, 322, 



343 

 Froude, W. 22 

 Fucus 355 

 Fundulus 125 

 Fusulina 593, 594 

 Fusus 527, 557 



