340 THE WORLD OF THE SEA. 
possible phase of marine life may be seen in full vigour—the 
voracity of cuttles; the moulting of the crabs; the incubation of 
the plaice; the nests of the sea-horse, and all the wonders of the 
world of the sea, may here be witnessed. We give an illustration 
taken from the aquarium at Concarneau. The black-mouthed 
dog-fish lays some eighteen eggs, these it attaches by tendrils 
to the rocks, or to the submarine vegetation, and here they are 
anchored until they are hatched. 
Nothing can be more interesting than to watch the process of 
submarine life, every day bringing something new to rivet our 
interest or excite our wonder. An attempt is being made to raise 
a company for the purpose of building similar reservoirs at 
Brighton. We sincerely hope they will succeed, and thus bring 
before the public the wonders which the water shields from 
ordinary observers. It is only by observation that we can arrive at 
the habits of the inhabitants of the sea, and close observation is 
only possible when the animal is enclosed within the transparent 
walls of an aquarium; and when we remember that our success in 
pisciculture is entirely measured by our knowledge of the wants 
and habits of the fish, we at once recognise the absolute necessity 
of closely attending to the life of the aquarium, and by this means 
we shall arrive by the shortest route at the commercial success of 
the undertaking. 
