Boys perform experiments on bananas in a science lesson.
Filmed at Chiswick County School. "Schooltime for boys is no longer synonymous with toil. Today the modern boy has change in every way - outdoors - " Various shots of boys doing keep fit exercises in the open air in front of the school. They throw a large ball around. "Or in the 'Lab' - where microscopes and test tubes cast alluring spells... (and smells)." M/S of schoolboys in the school laboratory. A science lesson presumably. "Any kind of fruit experiment has tasty possibilities. Today, we take a banana - a green one - for a subject..." C/U of a banana being sliced (with its skin still on). A small piece of the banana is placed inside a slicing machine. A small sliver of banana is cut off and placed in a dish. The sliver is then placed on a piece of glass, ready to go under the microscope. C/U of the slide being placed under the microscope. M/S of boy looking into the microscope.
"The microscope reveals that a green banana is composed largely of starch grains... (troublesome to most tummies)." C/U of what is seen through the microscope. "A little iodine turns the grain black - this proves the presence of starch..." C/U of iodine being dripped onto the microscope slide. C/U of what seen under the microscope. "Now take a ripe banana section for the microscope." M/S of boy peeling a banana in the laboratory. The top of the banana is broken off. A tiny sliver is sliced off and placed under the microscope. "In nature's mysterious way, warmth and sun have changed the starch grains into pure sugar." C/U of what seen under the microscope. "Always keep this fruit wrapped up and warm." School master places bunch of bananas into a cloth lined basket. He wraps them up carefully, puts the lid on then puts them away in a drawer. Exterior of school - boys doing keep fit suddenly stop and run full pelt towards the school master who hands out bananas. M/S of the boys who all clamour for bananas.
Was an item in Eve's Film Review issue number 644.