Huntington believes that climate is the most important factor in determining the development of a highly progressive race or nation. As a result of his studies he concludes that a mean temperature of 64° F., a mean humidity of about 80 per cent, and frequent changes of temperature are the most desirable conditions for physical work. Statistical evidence is offered to support the theory that only people who live under conditions of relative storminess become industrious, capable and successful. His evidence is very convincing, yet as I read his books (8) on Civilization and Climate, and World Power and Evolution, I could not help forming the conclusion that while climate is undoubtedly a factor of great importance in determining well-being and consequent achievement, the author had ignored facts which modern research has brought to light in the field of nutrition, which should find a place in any discussion of human geography.