A study on oidium originally printed in 1907 by the university of California. This book is thoroughly recommended for inclusion on the amateur or professional winegrower and historian of viticulture, containing a wealth of information and anecdote, much of which is still practical today. Extensively illustrated with drawings, diagrams and photographs. This book contains classic material dating back to the 1900s and before. The content has been carefully selected for its interest and relevance to a modern audience. It comes complete with a specially commissioned new biography of the author.