Title reads: "British International Pictures Limited presents Secrets of Nature. Distributed by Wardour Films Ltd. The Froth Blower. Produced by British Instructional Films Ltd."
Cuckoo spit clinging to plants. Voice over explains that this froth has nothing to do with the cuckoo but with...
Nice shots of countryside scenes.
A Secrets of Nature Educational film about the rearing of Cuckoos
Unedited material of organic entities seen under a microscope - for Secrets of Nature films probably.
Life and death of the Aphis.
Microscopic look at gnat and mosquito larvae.
Educational film about water fleas.
Educational film showing how maize grows - some time lapse photography and animations.
Educational film about the life of a nightingale.