Dwellers of the sea and shore . dwellersofseasho00crow Year: 1935 Living Lights that Never Die 283 though some giants measuring more than an inch in diameter are to be found in the warmer waters, most forms are so small as to be practically invisible. A wonderful work is performed by these shells in building the crust of the earth. They are constantly settling to globigerina; a protozoan, the shell of this minute animal is in the center, and from it radiates stiff spines of lime. enclosing the shell is a frothy mass of living substance from which extends numerous fine threads. the floor of
Dwellers of the sea and shore . dwellersofseasho00crow Year: 1935 Living Lights that Never Die 283 though some giants measuring more than an inch in diameter are to be found in the warmer waters, most forms are so small as to be practically invisible. A wonderful work is performed by these shells in building the crust of the earth. They are constantly settling to globigerina; a protozoan, the shell of this minute animal is in the center, and from it radiates stiff spines of lime. enclosing the shell is a frothy mass of living substance from which extends numerous fine threads. the floor of the ocean. The dead shells are almost the sole constituent of the material that forms the bottom in many regions of the deep sea. They also compose the platforms of coral reefs. The famous chalk cliffs of England are made up of their countless billions which long ago were dropped upon the floor of the
Size: 1436px × 1393px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
