Micro-photography of minute plants and animals.
United States of America.
"The study of the minute by the aid of the microscope, has enriched every department of scientific knowledge, and today we take you into the world of the infinitely small."
C/Us of a microscope then microscope shots of various minute animals and plants. Micro-photography of the bladderwort (sp?), showing how it traps food - insect larvae etc.
This plant is being used to bring down numbers of mosquitos in some places - it eats mosquito larvae.
Amoeba is seen under the microscope, then the heart of an embryo chick and the circulation of blood in a frog's foot.