Summary: Customs and traditions in South India as discussed by P.V. Tagadisa Ayyar reflect the rich cultural heritage and beliefs of the region. The book explores various social customs, suggesting rationales for each custom. Highlighting the significance of Indian folk traditions, the foreword acknowledges the depth of history and tradition underpinning these practices. Examples like using margosa leaves to ward off evil spirits or the intricate rituals during weddings emphasize the deep-rooted beliefs prevalent in South Indian culture. The text also delves into the physiological aspects of diet in Hindu traditions, showcasing the detailed knowledge of ancient sages in anatomy and physiology. Moreover, the book touches on the sacredness of animals and plants, showcasing how interconnected beliefs and practices are with nature. The detailed descriptions of customs related to auspiciousness, marriage ceremonies, and folk remedies provide insights into the cultural fabric of South India, illustrating the importance of these customs in daily life.