Uric Acid as a Factor in the Causation of Disease: A Contribution to the Pathology of High Blood Pressure, Headache, Epilepsy, Nervousness, Mental Disease, Asthma, Hay Fever, Paroxysmal Haemoglobinuria, Anaemia, Bright's Disease, Diabetes, Gout, Rheumatism, Bronchitis, and Other Disorders