Mr. Williamson has contributed to the literature of travel and of science another of those thorough, sober, and instructive books which have been one of the incidental results of Christian Missions. To the ordinary advantages over casual visitors, which long residence and familiar intimacy gives to a missionary, and to the conscientiousness which his religious position and character impose upon him, Mr. Williamson, as a highly-educated medical man, adds a higher degree of scientific knowledge than many of his brethren possess, which qualifies him to speak of the configuration, products, and possibilities of the country in a way that will impart valuable knowledge. Mr. Williamson first visited China as a missionary in connection with the London Missionary Society. His health failed after two or three years' residence, and he returned to England. On the re-establishment of his health he returned to China, about seven years ago, as an agent of the National Bible Society of Scotland. These volumes are, virtually, the journal-records of eight extensive journeys through various parts of North China, which he has made in the prosecution of his evangelistic labours. It need scarcely be remarked that a man so occupied, the very business of whose life is to travel from place to place, and to cultivate familiar intercourse with the people, has opportunities for the acquisition of knowledge, to which no mere casual traveller, or resident merchant, or professional man can pretend. Accordingly, Mr. Williamson's volumes are full of minute, thorough, and novel information of all kinds concerning the country and the people; they are utilitarian enough for a blue book, while they have the general interest of a book of travels in countries of which we are almost entirely ignorant. We do not, in fact, remember two volumes the information of which is so valuable, and the interest of which is so great, at this particular juncture especially, when our peaceful relations with China are again in peril. Our Government, as well as the general public, may gather from them more accurate and extensive information respecting the sources and character of Chinese feeling towards us, than from any other source whatever--not excepting even the valuable and intelligent information furnished by our diplomatic agents. Mr. Williamson has been among the people as distinguished from officials, and he speaks confidently concerning the peacefulness and friendliness of their disposition towards Protestant missionaries. He travelled unarmed, and encountered no violence or rudeness, nothing more than the occasional attempts at extortion with which travellers are not unfamiliar in London and New York. They are grossly ignorant, and in some places look upon Europeans as a different species of beings. 'In some places they calls us "devils," not in impertinence, but in genuine ignorance of our origin and character; so much so, that they often use this term with