INDEX. 



419 



Page 

 Eels, towns named from . . . 378 



, mode of supplying London . 379 



— — , burying-places of, discovered 



by frost 379 



— — frozen and thawed again . 1 1 



, spearing 379 



, novel modes of fishing for . 380 



eaten by rats, &o. . . . 381-384 



, cold inimical to ... . 385 



, migration to sea . . . 385 



, eel-buots 387 



, eel-fare 388 



, habits in confinement . . 389 



, tame 390 



, travelling overland . . . 390 



, how they escape .... 391 



, breeding in fresh water only 392 



, how generated (superstitions) 393 



" , oviparous or viviparous . . 393 



, very large 394 



, ferocity 395 



, disease in 396 



, lymphatic heart . . . 401 



Eggs of fish, numbers . . . . 109 



Esocids, family of 180-237 



Esox, genus 180-237 



Excretion, organs of . . . . 8 



Families of fish generally ... 40 



, derivation of names ... 40 



of British Eresh-water fish 43-46 



Eeehng, in fish generally ... 14 



, instances of want of . . . 15 



Ein-rays 31 



Eins, structure and uses . . . 31-33 

 Eishes generally, position in Ani- 

 mal Kingdom 6 



, numbers of 6 



, plans on which constructed 7 



, general organization of . ■ . 7, 8 



, nerves, arrangement of . . 7 



, of sensation and volition 7 



, of smell, sight, taste, 



and hearing 8 



, vertebrae, spinal column, &c. 7, 27 



, brain 8 



, organs of digestion . . . 8, 17 



, organs of respiration, circu- 

 lation, and excretion ... 8 

 , air- or ewim-bladder, posi- 

 tion 8 



Page 

 Eishes generally, continued. 

 , air- or swim-bladder, distri- 

 bution of, amongst fish . . 19 



, contents of ... . 19 



, engraving of, in Carp . 20 



breathing-apparatus . . . 8-9 

 gills, gill-arches, gill-fila- 

 ments ........ 8 



pharyngeal arch .... 8 



heart, structure of . . . 9 



kidneys, position of . . . 18 



temperature of blood . . 10 

 extremes of high and low 



temperature sustained by . 11 

 sight of, and structure, &c. 



ofeye 11-13 



hearing of, and structure of 



ear 13-14 



feeling, sense very low . . 14 



use of ' barbels ' or ' beards ' 15 



diseases of, and parasites . 16 

 smell, sense probably acute : 



examples 16 



taste, probably low ... 17 



affections 17 



sexual distinctions ... 20 



organs of reproduction . . 20 



hard, and soft roe or ' milt ' 21 



eggs, numbers of ... . 109 



spawning-process .... 21 

 viviparous fish (producing 



their young alive) .... 23 



engravings of young of . . 24 

 scales, formation and 



uses 24-27 



, denominations of . . 26 



lateral line, formation of . 25 



, position of . . 32 



propulsion, mode of . . . 27 

 bones of head, names of . 28-30 



, gUl-covers . . 30 



gUl-rays 30 



fins, structure and uses . 31-33 



fin-rays 31 



teeth — names, situation, and 



form 33-34 



general classification of . 36-41 

 families of, and derivation 



of names 40 



, British Eresh-water, intro- 

 ductory remarks on . . . 42 



