196 
Salmon, how to distinguish a, from 
a Sea Trout, 79 
—— family, the peculiar feature 
of the, 45 
——, the members of the, 45 
Saprolegnia Ferax (“‘ Fungus ’”’), 19 
Sardine, the Pilchard as a, 121 
Sars, the Norwegian naturalist, 
107 
Scallop, how to examine a, 143 
, the gills of the, 144 
——, the mantle-cavity of the, 144 
, the eyes of the, 145 
Scenic negatives, how to obtain, 
176 
Sea-horse, the mimicry of the, 34 
Sea Trout, other names for the, 80 
Sea Urchin, the, 140 
, tube feet of, 141 
Seine net, the use of the, 130 
Shark, varieties of, in British waters, 
39 
——, the Blue, 39 
——, the Hammerhead, 39 
——,, the Thresher, 39 
—— as the most ancient fish, 43 
Shrimp trawl, the, 133 
Silvery appearance in Trout, the 
cause of, 82 
Skate, description of egg of the, 11 
Smolt, Salmon, 59 
** Snoods,” 128 
Spat, Oyster, 147 
** Spat shells,’ 149 
Spawning, the process of, 49 
Stages of life, the four, 110 
Star-fish, the common, 140 
, the suckers of the, 141 
> Mussels as food for, 152 
Stickleback, the parental duties of 
the three-spined, 14 
——, the change of colour in the 
male, 14 
Stickleback’s nest, the ten-spined, 
—— ——, the three-spined, 14 
Stone Loach, the alteration in the 
colour of the, 29-34 
Suckers of the Star-fish, the, 141 
Sunk box method of obtaining 
early life details, 101 
INDEX 
Tan« photography, 160 et seq. 
Tanks, the arrangement of the fish, 
160 
—, ae to work with single fish, 
63 
Teeth of the Carp, the throat, 97 
Tench, the protective colouring of 
the, 30 
Thayer, ‘‘ Concealing Coloration in 
the Animal World,” 32 
Thor, the researches on the Danish 
boat, 125 
Thornback Ray, the food of the, 40 
Throat teeth of the Carp, 97 
Tow net, description of the, 107 
——,, use by Sars, 107 
Trammell net, the use of the, 129 
Transitory Plankton, description of, 
154 
Transparency, how to suggest, 190 
Trawl, the use of the, 127 
——., the Beam, 133 
——, the Otter, 133 
, the use of the Shrimp, 133 
Trawler, the size of a, 131 
Tropical fish, the brilliant colours of, 
36 
Trout, number of eggs laid by, 17 
——, the different kinds of, 46 
——, the life of a Brown, 48 
——,, the process of spawning, 49 
——,, the hatching of the young, 50 
——, Loch Leven, 84 
——, Rainbow, 84 
, the definition of a Bull, 84 
——,, the Great Lake, 85 
——, the time of spawning of Rain- 
bow, 86 
, the agility of, 89 
Turbot, oil globule in the egg of the, 
109 
VELuM, 148 
“© WELL-MENDED ”’ fish, 67 
Whelk, the, 151 
, the radula of a, 151 
Wrasses, brilliant colours of, 37 
YEARLING Trout, 54 
Yellow fin, the description of a, 80 
Printeo sy Cassexr & Company, Limitep, La Betts Sauvace, Lonpon, E.C. 
10.212 
