Location of events unknown.
M/S inventor Edwin Solomon dipping plates into his machine, then taking them out and putting them on the side. M/S Professor A.M. Low in his garden, he hangs a small packet of DDT on a tree and lights the fuse with a match before walking away....
Strange look at gears and cogs in close-up.
Soundtrack only; visuals missing.
A farmer tills his field with a new tractor-tiller.
A look at how artificial ice is made in a factory.
A new machine paints the white lines down the middle of the road.
A very large telescope located on the top of a building is demonstrated.
Eggs are checked and graded at factory. Location of events unknown.
An old fashioned sewing machine is compared with a new one.