Hay Fever, Hay Asthma: Its Causes, Diagnosis, and Treatment is a medical textbook written by William Lloyd and published in 1907. The book focuses on the condition known as hay fever or hay asthma, which is a type of allergic reaction that occurs in response to certain environmental triggers, such as pollen, dust, or animal dander. The book provides a comprehensive overview of the causes of hay fever, including the various types of allergens that...