Abstract
The comparison of the carbohydrate content of mature leaves at 12,500 ft. in the Karakoram-Himalaya and at sea-level on Jan Mayen in the arctic shows great similarity in total carbohydrate content, ratio of reducing sugar to total sugar and the range of diurnal variation. The data indicate that the balance between formation and utilization is similar despite the marked dissimilarity of diurnal climatic variation.