Method for drying wood in a short period of time by maintaining the concentration of a combustion gas contained in a drying room atmosphere for use in drying the wood to a high value and by maintaining the pressure of the drying room atmosphere to a high value. The guide members including pairs of raised vertical ribs and a groove. In some embodiments, the devices can be configured by the host system through address select pins of the devices. The hearing system also comprises an output-side actuator arrangement for stimulation of the middle or inner ear, and an electrical power supply unit which supplies individual components of the system with energy. If the maximum total angle of view when an object at infinity is in focus is taken as 2\u03c9, the imaging lens satisfies a conditional expression, 2\u03c9>130\xb0.