A PIECE OF A REEF-BUILDING CORAL, BUILT UP BY A LARGE
COLONY OF SMALL SEA-ANEMONE-LIKE POLYPS, EACH OF WHICH
FORMS FROM THE SALTS OF THE SEA A SKELETON OR SHELL OF
LIME 64
From the Smithsonian Report, 1917.
A GROUP OF CHALK-FORMING ANIMALS, OR FORAMINIFERA, EACH
ABOUT THE SIZE OF A VERY SMALL PIN'S HEAD 65
Photo: J. J. Ward, F.E.S.
A COMMON FORAMINIFER (POLYSTOMELLA) SHOWING THE SHELL IN
THE CENTRE AND THE OUTFLOWING NETWORK OF LIVING MATTER,
ALONG WHICH GRANULES ARE CONTINUALLY TRAVELLING, AND BY
WHICH FOOD PARTICLES ARE ENTANGLED AND DRAWN IN 65
Reproduced by permission of the Natural History Museum
(after Max Schultze).
A PLANT-LIKE ANIMAL, OR ZOOPHYTE, CALLED OBELIA 68
Photo: J. J. Ward, F.E.S.
TRYPANOSOMA GAMBIENSE 69
Reproduced by permission of _The Quart. Journ. Mic. Sci._