The academicians of France, indeed, rejected terms of science in their first essay, but found afterwards a necessity of relaxing the rigour of their determination; and, though they would not naturalize them at once by a single act, permitted them by degrees to settle themselves among the natives, with little opposition; and it would surely be no proof of judgment to imitate them in an errour which they have now retracted, and deprive the book of its chief use, by scrupulous distinctions.

Of such words, however, all are not equally to be considered as parts of our language; for some of them are naturalized and incorporated; but others still continue aliens, and are rather auxiliaries than subjects.  This naturalization is produced either by an admission into common speech, in some metaphorical signification, which is the acquisition of a kind of property among us; as we say, the zenith of advancement, the meridian of life, the cynosure[2] of neighbouring eyes; or it is the consequence of long intermixture and frequent use, by which the ear is accustomed to the sound of words, till their original is forgotten, as in equator, satellites; or of the change of a foreign to an English termination, and a conformity to the laws of the speech into which they are adopted; as in category, cachexy, peripneumony.

Of those which still continue in the state of aliens, and have made no approaches towards assimilation, some seem necessary to be retained, because the purchasers of the Dictionary will expect to find them.  Such are many words in the common law, as capias, habeas corpus, praemunire, nisi prius:  such are some terms of controversial divinity, as hypostasis; and of physick, as the names of diseases; and, in general, all terms which can be found in books not written professedly upon particular arts, or can be supposed necessary to those who do not regularly study them.  Thus, when a reader not skilled in physick happens in Milton upon this line,

               —­pining atrophy,
  Marasmus, and wide-wasting pestilence,

he will, with equal expectation, look into his dictionary for the word marasmus, as for atrophy, or pestilence; and will have reason to complain if he does not find it.

It seems necessary to the completion of a dictionary, designed not merely for criticks, but for popular use, that it should comprise, in some degree, the peculiar words of every profession; that the terms of war and navigation should be inserted, so far as they can be required by readers of travels, and of history; and those of law, merchandise, and mechanical trades, so far as they can be supposed useful in the occurrences of common life.

But there ought, however, to be some distinction made between the different classes of words; and, therefore, it will be proper to print those which are incorporated into the language in the usual character, and those which are still to be considered as foreign, in the Italick letter.