Prototype Board.

The underside of the Pro Board shows how the holes are connected. The top horizontal strip is used for the switched positive 9 Volt rail. The bottom horizontal strip is used for the diode protected negative 0 Volt rail. (Diode protects the circuit from the battery being connected the wrong way round)
The two rows of vertical strips connect five holes. The horizontal gap is used for connecting Integrated Circuits. IC's.