466 



Diaphragm, 138, 159: Fig. 79 



Diatoms, 256, 268f. 



Diet, 188, 192, 255ff., 303, 322, 343f. 



Digestion, 28 if.. 2851!. 



Digits, 61 



Dijk, VV. H. E. van, 50 



Dijkgraaf, Prof. S., 205, 223 



Discovery Committee, 49, 257, 320, 

 331; Fig. 182 



Distribution, 3i6fr. : Fig. 181 



Diverticulae, i52f., 225; Fig. 87 



Diving, see Sounding 



Dobson, A. T. A., 46 



Dollo's 'law of irreversible evolution', 

 69, 236 



Dolphins, joff., 78, 83, 84, 96, 99f , 105, 

 io8f, no, ii2ff., 125, i27ff., 130, 

 i36f., 139. 153, 156, 157, 165. 168, 

 i76f., i82f., 184, i87f, igof, i93ff., 

 198, 200, 203f., 2i9f., 222, 227, 233, 

 235ff., 241, 243, 248f., 27if., 294, 

 299» 301, 304ff-> 309. 310. 312, 314, 

 316, 345f., 359, 361, 364, 367, 369, 

 372, 389, 407; Figs. 18, 19, 57, 83, 

 99, loi, 175 



Dorofeev, Dr. S. W., 50 



Dorsal fin, 16, 18, 25, 32, 78, 93, 96, 

 373f- 



Dorsal horns, 239f. 



Drion, Dr. E. F., 414 



Ductus arteriosus, 1 70 



Ductus venosus, 1 70 



Dudley, 292, 348 



Dunstan, 373 



Ear, Figs. 107, 109, 113, 243 

 Earbone, 2 loff.; Figs., iio, 112 

 Eardrum, 2o6f., 210, 2i4f ; Figs. 108, 



109 

 Earholes, 79f. 

 Ear, inner, 211, 214 

 Ear, middle, 210, 213 

 Ear plug, 2o8f., 403(1.; Figs. 108, 109, 



222 



Ear slits, 203, 208 



East Siberian Dolphin, 172 



Egmond, Prof. A. A.J. van, 202 



Electrocution of whales, 34f. 



Embryo, 60, 72, 264f , 36iff.; Figs. 23, 



24, 35, 43» 144' 203, 204, 207, 208, 



209, 210 

 Enamel, 270, 277 

 Endocrine glands, 44, 304, 308 

 Engel, 141 



Enoshima Acjuarium, 180 

 Enzymes, 287f., 308 

 Eocene, 63 



Epidermis, 2g6f[.; Figs. 170, 171, 172 

 Epididymis, 350; Fig. 192 

 Epiglottis, i47f., 152; Figs. 85, 86 

 Epiphysis, 239 

 Erikson, 162 

 Eschricht, 24, 156, 274 

 Essapian, 368 

 Evaporation, 312 



Evolution of whales, 61 ff.; Figs. 27, 36 

 Extinction, 392ff. 

 Eye, 228ff. ; Figs. 1 16, 118, 119 

 Eyelids, 233, 237 

 Eye muscles, 235f. 



Fabricius, 23 



Facial nerve, 244 



Factory ships, 33f , 396; Fig. 218 



Faeces, 312 



False Killer Whale, 84, 113, 199, 276, 



388; Figs. 77, 9i> no 

 Faroe Is., 55 

 Feeding, i49f , 243, 255ff., 294f , 303f, 



316 

 Fcjer, 1 1 2 

 Femur, 59, 66 

 Fetcher, 311, 314 

 Fiebiger, 141 

 Finless Black Porpoise, 52, 84, 86, 314, 



346; Fig. 187 

 Fin Whale, 24, 26, 32, 45, 58, 85, 92f. 



95f., 102, 108, no, ii2f, 117, 123, 



