The speech of Lord Palmerston in the House of Commons, after the death of Mr. Cobden, must be familiar to all readers. It came to round the measure of his eulogy, which had been sung in the East and in the West, in the North and in the South, and at length was heard even from the heart of Nazareth. We will not quote here the words of England's late minister; we would only urge those who love the study of nobility to read the Life of Richard Cobden, remembering such men "are set here for examples." _The Human Hair, and the Cutaneous Diseases which affect it: together with Essays on Acne, Sycosis, and Cloasma._ By B. C. PERRY, Dermatologist. New York: James Miller. This is the first book of its kind which has been published, and it is well calculated to do good service in many ways. The author proposed to himself in its preparation so to present all topics which relate to the hair and scalp in health and disease, that his treatise should not only possess value as being founded upon a just discrimination of physiological principles, and interest for the general reader by reason of its familiarity of manner and the _ana_ by which the subject should be illustrated, but also be of service to all who care to understand the nature of an important part of the physical system. Upon the whole, this purpose has been well carried into effect; and every chapter of the comely volume bears witness to the research and reflection of the author. With no similar work for a guide or model, it was necessary to derive from the volumes of general and comparative physiology such facts and deductions as related to the theme; and that such have been drawn from recognized authorities, the frequent references to the writings of Carpenter, Wilson, Plumbe, Neligan, Rayer, and others of like eminence, will show. Taking these collations of scientific statement as a basis, Dr. Perry proceeds--after giving some space to anecdotes and historical notes concerning the _chevelure_ of former times--to speak at length of the formation and composition of the hair, of the unreasonable and injudicious treatment to which it is commonly subjected, and of its proper management. He then passes on to discuss the cutaneous diseases to which the scalp is liable, and by which of course the hair is affected to its detriment, devotes some chapters to the discussion of some diseases peculiar to the face, and concludes his volume with an Appendix containing an exposition of the constituents of many favorite and famous cosmetics, pointing out at the same time their true character, the danger and unpleasantness of which, he says, are disguised with much empirical skill.