Suppose I am told that a certain sample of wheat comes from Lahore, and that I do not know where Lahore is. I look it out in the gazetteer and ascertain that it is the capital of the Punjab.... If I know nothing of geography, I shall get up with the idea that Lahore is in India, and that will be about all. If I have been properly trained in geography, the word Punjab will ... probably connote to me many things. I shall see Lahore in the northern angle of India. I shall picture it in a great plain, at the foot of a snowy range, in the midst of the rivers of the Indus system. I shall think of the monsoons and the desert, of the water brought from the mountains by the irrigation canals. I shall know the climate, the seed time, and the harvest. Kurrachee and the Suez Canal will shine out from my mental map. I shall be able to calculate at what time of the year the cargoes will be delivered in England. Moreover, the Punjab will be to me the equal in size and population of a great European country, a Spain or an Italy, and I shall appreciate the market it offers for English exports.7