Michael Morpurgo, author. A child needs to feel from the very start that she or he is wanted and loved. They should grow up in the soil of affection of care. There is no replacement for that, it is the most important thing.
American bugler in the Navy, 1917. The bugle is a very simple brass instrument. It has no valves or other mechanisms, the only way the player has to control the pitch is changing the shape of his lips. This means that only notes from the harmonic series can be played.
The word is derived from the Latin valva, the moving part of a door, in turn from volvere, to turn, roll. The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or checks the flow in one direction.