The most sagacious and laborious naturalists have never yet succeeded in tracing with certainty the line which separates the district of vegetable life from the neighboring region of unorganized matter, or which marks the termination of the former, and the commencement of the animal empire. A still greater obscurity lies in the distinctive characters, by which the objects in each of these great departments of nature have been arranged and assorted.
When we pass from the works of nature, in which all the delineations are perfectly accurate, and appear to be otherwise only from the imperfection of the eye which surveys them, to the institutions of man, in which the obscurity arises as well from the object itself, as from the organ by which it is contemplated; we must perceive the necessity of moderating still further our expectations and hopes from the efforts of human sagacity. Experience has instructed us, that no skill in the science of Government has yet been able to discriminate and define, with sufficient certainty, its three great provinces, the Legislative, Executive, and Judiciary; or even the privileges and powers of the different Legislative branches. Questions daily occur in the course of practice, which prove the obscurity which reigns in these subjects, and which puzzle the greatest adepts in political science.
The experience of ages, with the continued and combined labors of the most enlightened legislatures and jurists, have been equally unsuccessful in delineating the several objects and limits of different codes of laws, and different tribunals of justice. The precise extent of the common law, and the statute law, the maritime law, the ecclesiastical law, the law of corporations, and other local laws and customs, remains still to be clearly and finally established in Great Britain, where accuracy in such subjects has been more industriously pursued than in