=========+===========+===========+===========+===========+=========== | IS THERE | | DIGESTIVE | | | A HEAD? | METHOD OF |ORGANS AND | RE- | | A NECK? | FEEDING | DIGESTION |PRODUCTION | SENSES ---------+-----------+-----------+-----------+-----------+----------- | | | | | Ameba | | | | | | | | | | ---------+-----------+-----------+-----------+-----------+----------- | | | | | Sponge | | | | | | | | | | ---------+-----------+-----------+-----------+-----------+----------- | | | | | Hydra | | | | | | | | | | ---------+-----------+-----------+-----------+-----------+----------- | | | | | Starfish | | | | | | | | | | ---------+-----------+-----------+-----------+-----------+----------- | | | | | Earthworm| | | | | | | | | | ---------+-----------+-----------+-----------+-----------+----------- | | | | | Wasp | | | | | | | | | | ---------+-----------+-----------+-----------+-----------+----------- | | | | | Mussel | | | | | | | | | | ---------+-----------+-----------+-----------+-----------+----------- | | | | | Fish | | | | | | | | | | =========+===========+===========+===========+===========+=========== [Illustration: FIG. 229.--DRAWING THE SEINE.] [Illustration: FIG. 230.--SUNFISH. FIG. 231.--TUNNY. FIG. 232.--SWORDFISH. FIG. 233.--SWELLFISH. FIG. 234.--TURBOT. FIG. 235.--CARP. FIG. 236.--HERRING. FIG. 237.--SPECKLED TROUT. FIG. 238.--PERCH. FIG. 239.--SALMON. =Seven Food Fish. Three Curious Fish.= SPECIAL REPORTS. (Encyclopedia, texts, dictionary.)] [Illustration: FIG. 240.--SEA HORSE (_hippocampus_), with incubating pouch, _Brt._ FIG. 241.--BAND FISH. FIG. 242.--TORPEDO. Electrical organs at right and left of brain. FIG. 243.--LANTERN FISH (_Linophryne lucifer_). (After Collett.)