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Experimental Researches On The Causes And Nature Of Catarrhus Aestivus, Hay Fever Or Hay Asthma is a scientific book published in 1873 by Charles Harrison Blackley. The book is a detailed exploration of the causes and nature of hay fever, a common allergy that affects many people during the summer months. Blackley was a British physician who conducted extensive research on the subject, using experimental methods to investigate the triggers and symptoms of hay fever.The book is divided into several chapters, each of which covers a different aspect of the condition. Blackley begins by describing the symptoms of hay fever and how they are triggered by exposure to pollen and other allergens. He then goes on to discuss the various theories that had been proposed to explain the condition, including the idea that it was caused by a nervous disorder or a reaction to certain foods.Blackley's experimental research is the highlight of the book, as he describes in detail the various experiments he conducted to test different hypotheses about the causes of hay fever. He conducted experiments on himself and other volunteers, exposing them to different types of pollen and measuring their reactions. He also conducted experiments on animals, such as rabbits and dogs, to investigate the physiological mechanisms that underlie the allergic response.Through his research, Blackley was able to identify the specific types of pollen that were most likely to trigger hay fever, and he proposed a new theory to explain the condition. He suggested that hay fever was caused by an abnormal sensitivity of the nasal membrane to certain types of pollen, which caused an exaggerated immune response and inflammation of the nasal passages.Overall, Experimental Researches On The Causes And Nature Of Catarrhus Aestivus, Hay Fever Or Hay Asthma is a groundbreaking scientific work that helped to advance our understanding of this common allergy. It remains an important reference for researchers and clinicians working in the field of allergy and immunology.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.