The article discusses various aspects of cholera, including factors that may predispose individuals to the disease, the nature of the disease itself, and the treatment approaches. It notes that while certain conditions may reduce the risk of cholera, they do not necessarily prevent it, and other conditions do not guarantee immunity. The article also highlights that the onset of cholera typically begins with disturbances in the digestive system, particularly premonitory diarrhea. It suggests that the disease is caused by an unknown specific agent that rapidly exhausts vitality. The article also mentions the presence of reactionary phenomena, which are often the result of specific forms of phlegmasiae. It emphasizes the need to find a specific treatment for cholera, advocating for a cautious approach that addresses symptoms as they appear. The article concludes by stating that the average mortality rate from cholera is about one death in two patients. The article then transitions to a review of Charles Darwin's "The Variation of Animals and Plants under Domestication," which explores how domestication leads to variations in animals and plants. Darwin's work discusses the importance of variation and natural selection in the development of species, and he provides numerous examples from various animals and plants to support his theory. The book also delves into the inheritance of traits, the role of crossbreeding, and the significance of bud-variation in the development of new species. Darwin's arguments are supported by extensive observations and experiments, and he concludes that variation is a fundamental aspect of the development of life forms. The review also discusses the importance of inheritance and the challenges in understanding the mechanisms behind it. The article concludes by emphasizing the significance of Darwin's work in the field of biology and its implications for the study of life and evolution.The article discusses various aspects of cholera, including factors that may predispose individuals to the disease, the nature of the disease itself, and the treatment approaches. It notes that while certain conditions may reduce the risk of cholera, they do not necessarily prevent it, and other conditions do not guarantee immunity. The article also highlights that the onset of cholera typically begins with disturbances in the digestive system, particularly premonitory diarrhea. It suggests that the disease is caused by an unknown specific agent that rapidly exhausts vitality. The article also mentions the presence of reactionary phenomena, which are often the result of specific forms of phlegmasiae. It emphasizes the need to find a specific treatment for cholera, advocating for a cautious approach that addresses symptoms as they appear. The article concludes by stating that the average mortality rate from cholera is about one death in two patients. The article then transitions to a review of Charles Darwin's "The Variation of Animals and Plants under Domestication," which explores how domestication leads to variations in animals and plants. Darwin's work discusses the importance of variation and natural selection in the development of species, and he provides numerous examples from various animals and plants to support his theory. The book also delves into the inheritance of traits, the role of crossbreeding, and the significance of bud-variation in the development of new species. Darwin's arguments are supported by extensive observations and experiments, and he concludes that variation is a fundamental aspect of the development of life forms. The review also discusses the importance of inheritance and the challenges in understanding the mechanisms behind it. The article concludes by emphasizing the significance of Darwin's work in the field of biology and its implications for the study of life and evolution.