intellect, which had to build bridges and find straw to make the bricks, could dare to affirm its approach to the same conclusion. Truth to humanity made him true to fact; and truth to fact made him true in theory. It was in this spirit of devotion to his kind that he said, “Therefore here is the deficience which I find, that physicians have not ... set down and delivered over certain experimental medicines for the cure of particular diseases.” Dr. Russell’s true insight into the relation of Lord Bacon to the medical as well as to all science, has suggested the above remarks. What our author chiefly desires is, that the same principles which made medicine what it is, should be allowed to carry it yet further, and make it what it ought to be, and must become. As he goes on to show, through succeeding lives and theories, that just in proportion as these principles have been followed--the principles of careful observation, hypothesis, and experiment--have men made discoveries that have been helpful to their fellow-men; while, on the other hand, the most elaborate theories of the most popular physicians, which have owed their birth to premature generalization and invention, have passed away, like the crackling of thorns under a pot. Belonging to the latter class of men, we have Stahl, Hoffman, Boerhaave, Cullen, and Brown; while to the former belong Harvey, Sydenham, Jenner, and Hahnemann. After the last name, there is no need to say that our author is a homoeopath. Whatever may be our private opinion of the system, justice requires that we should say at least that books such as these are quite as open to refutation as to ridicule; for it is only a good argument that is worth refuting by a better. But we fear there are few books on this subject that treat of it with the calmness and fairness which would incline an honest homoeopath to put them into the hands of one of the opposite party as an exposition of his opinions. There is no excitement in these pages. They are the work of a man of liberal education, of refinement, and of truthfulness, with power to understand, and facility to express; one of whose main objects is to vindicate for homoeopathy, on the most rightful of all grounds--those on which alone science can stand--on the ground, that is, of laws discovered by observation and experiment--the place not only of a fact in the history of medicine, but the right to be considered as one of the greatest advances towards the establishment of a science of curing. Certainly if he and the rest of its advocates should fail utterly in this, the heresy will yet have established for itself a memorial in history, as one of the most powerful illusions that have ever deceived both priests and people. But the chief advantage which the system will derive from Dr. Russell’s book will spring, it seems to us, from his attempt--a successful one it must be confessed--to prove _that homoeopathy is a development, and not a