DO YOU KNOW?

Hawera Star, Volume XLVI, 28 August 1926, Page 18

DO YOU KNOW?

Street pillar-boxes are painted red as that bright colour catches the eye so that it is easy to find the box “Post Office red” is the distinguishing colour of the Post Office and is used on Royal mail vans, etc.

You- have' often noticed and wondered about, certain postage stamps, ol other countries, which have perforated letters on them. This is explained as follows: Large firms using great numbers of postage stamps frequently perforate their stamps with the initials of the company in order to prevent rnisappropiation of the same by those who have ready access to them.

Spaces about a quarter of an inch in length are left between the ends of railway rails to allow for expansion due to heat. During hot weather the rails expand until they practically touch. In very hot weather in .some countries pieces are cut off the ends of some of the rails It is quite a common occurrence to’ hear sharp crackling sounds when lines contract during the cool of the night

As a result of a swiftly flowing river meeting an incoming tide, a high crested wave is formed. This is commonly known as a bore. A funnel-shaped opening compresses the wave as it moves onward and makes it higher. The highest bore is met with where two tidal waves meet, as in the Bay of Tandy.