. St. Nicholas [serial] . graceful motion, the worm allows the fringesof the filaments to gather a portion of mudfrom the sea-bottom, when, fingering andmolding it, the fringes carry it down thelength of the filament to the bottom of the. A CLAM PLACED IN A GLASS OF SEA-WATER. Currents of water being watched through a magnifying-glass. builders, may be found on rocks or shells intubes of a parchment-like color built of sandand mud. From the end of the tube the wormextends a plumy crest of feather-like forms,which are the breathing-organs and are calledgill-filaments. Each filament has two frin
. St. Nicholas [serial] . graceful motion, the worm allows the fringesof the filaments to gather a portion of mudfrom the sea-bottom, when, fingering andmolding it, the fringes carry it down thelength of the filament to the bottom of the. A CLAM PLACED IN A GLASS OF SEA-WATER. Currents of water being watched through a magnifying-glass. builders, may be found on rocks or shells intubes of a parchment-like color built of sandand mud. From the end of the tube the wormextends a plumy crest of feather-like forms,which are the breathing-organs and are calledgill-filaments. Each filament has two fringesof little tentacles extending along its length onthe inner side, and these sensitive organs comeinto play when the tube is built. The processis wonderful. Bending down with slow and THE WORMS SABELLA LIVING IN THEIR TUBES ON AN OYSTER. The worm at the right is not yet inclosed in the tube. There aresome old abandoned tubes on the upper part of the oyster-shell. funnel. Here it is given into the charge oftwo leaf-like organs on the neck of the worm,which place this building-material on the edgeof the tube and shape it there, while at thesame time a mucous secretion is given off bythe worm which gives the mud cohesive
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Keywords: ., bookauthordodgemar, bookcentury1800, bookdecade1870, bookyear1873
