Richard Coleman

and made a significant contribution

gained considerable experience

as the director of the Stanford

UhiversiW Sleep Disorders Clinic at a crucial time in its history,when

it was stimulating an expanding interest in the field and establishing

sleep disorders as a nationwide discipline．He also served as chair—

man of the Multicenter Case Series Committee for the Association

of Sleep Disorders Centers and compiled and published data on 8，000

cases diagnosed and treated in eleven clinics across the United States．

In this book Dr．Coleman has dealt with areas of human health

that are associated with the scheduling of sleep and wakefulness．In

an ideal world there would presumably be a normal schedule that

we would adhere to：we would sleep when we were sleepy；this

would presumably be in the hours of darkness．Wre would sleep in

a safe place，SO we would have no anxiety．During the daytime we

would be fullv alert，without the need for caffeine or other stimulants，

and possibly planning a daily nap．Almost no one in the world now

actually enjoys these ideal conditions．Increasing numbers must fol—

lOW abnormal schedules and get too little sleep．Nearly half of US

must stay awake at night to watch over the other half as they sleep．