Does thunder make the milk go sour? Do frogs and cows really know when it's going to rain? Are bee stings good for rheumatism? And why should a dog worry about getting too close to a walnut tree? PROFESSOR DILLY enthusiastically travels the Cotswolds on the track of the old wives. He takes a light-hearted look at some of the tales our grandmothers told us. Do these time-tested rules of rural life work? Well. he tries to answer that too.