LIST OF ILLUSTRATIONS ix 
Facing page 
SMELT . 5 5 a A . . . ° ° i i 
RAINBOW TROUT . é . 4 ‘ 3 : ; 5 46 
BROWN TROUT : a ; : A : , | 
HATCHING OF THE SALMON. 5 : 2 a 50 
BROWN TROUT TWO WEEKS OLD . : . ° 
BROWN TROUT FIVE WEEKS OLD. a : é “ 52 
SALMON FRY, SEVEN WEEKS OLD SHOWING EARLY PARR MARKS 
LIFE OF A SALMON AS READ BY THE SCALE—I. ' 6 F 62 
LIFE OF A SALMON AS READ BY THE SCALE—II. A : , 64 
SEA TROUT, PHOTOGRAPHED BY FRONT LIGHT, SHOWING ITS 
SILVERY BODY : : : 5 7 
RAINBOW TROUT. THE SILVERY BODY REFLECTING THE COLOUR oe 
OF THE WATER : 2 z s ‘. 3 : 
RAINBOW TROUT AS SEEN IN THE POND . 5 @ Z : 84 
A RISE AS SEEN FROM BELOW THE SURFACE OF THE WATER 90 
THROAT TEETH OF THE CARP . ‘ Fi é 3 é | 
THE CARP A : . 3 : P 6 - + 96 
MOUTH OF THE CARP. j 4 z ci 5 | 
THE GOLD FISH % i : 5 : . : 98 
WATER SUPPLY AND BOX USED FOR REARING ROACH A - 100 
THROAT TEETH OF CHUB : : 5 ¢ : f - 
CARP, HATCHED SIX HOURS F F : , 102 
SWIM-BLADDER OF CRUCIAN CARP . : , 
FIRST TWO DAYS IN THE LIFE OF A ROACH 3 6 . 104 
GROWTH OF SWIM-BLADDER: ROACH F : 7 5 . 106 
NEWLY HATCHED PLAICE 3 . a 5 110 
PLAICE, HATCHING HEAD FIRST ‘ - x A Z 
PLAICE, HATCHING TAIL FIRST. 5 F 5 : ‘ | 
PLAICE ENLARGING RENT IN THE EGG MEMBRANE . 114 
PLAICE, NEWLY HATCHED 5 ‘ < - é ‘ A | 
PLAICE, EIGHT DAYS OLD ? ‘i J E 5 A 7 
STAGES IN THE TRANSFORMATION OF THE PLAICE, SHOWING HOW 
THE FISH BECOMES FLAT AND THE LEFT EYE IS CARRIED OVER 114 
ADULT PLAICE ‘ . ; : é 5 eS 
POOLS THAT HOLD YOUNG FLAT FISH 3 : ; : we 
HOW TO READ THE AGE OF A PLAICE BY THE RINGS ON THE OTOLITHS 
OR EAR-STONES . A ; ® ‘ ‘ ; rads 
THE COMMON SEA URCHIN . . . . . . pe Ys 
