An involved, far-fetched approach to an appraisal of economic change in relation to the stock market. The author believes in the nature of certain cyclical forces which seem to influence our outlook and behaviour. A sort of modern adaptation and rationalization of the Blue Monday superstition, I might say. He gives intricate charts showing how rain and weather influence the rise and fall of market prices and sales. He maintains that certain situations follow a ten year pattern. Certainly not for the average investor who hopes to find a new trick, but just another angle for the research minded who want to apply intricate mathematical suppositions and theories to a new field.