Several thousand years have passed away since man first became acquainted with the most prominent and familiar of those objects with which he is surrounded. For these objects he has inherited from his remote ancestors names which he learns in infancy, and which relieve him from the task of inventing anew appropriate designations. But though Nature presents no new features, the progress of Science has in modern times revealed a few new substances unknown to our forefathers, which have served at intervals to call forth the exercise of the same inventive powers by which language was originally constructed! Now if we examine the names that were originally conferred on the various chemical substances which have been brought to light in our own and in the last generation, we shall arrive at the instructive result that these names almost wholly consist of descriptive terms, representing either some of their most obvious properties, or the various conclusions formed by different philosophers on the subject of their nature and composition.(87) Further, we shall find that many of these new substances gave rise, in the first instance, to numerous descriptive terms! That these terms were for some time used concurrently! That subsequently a portion of them fell into disuse! That finally the remainder gradually lost the descriptive significations at first attached to them, and acquired the character of mere arbitrary or conventional names! Hence it is evident, and most assuredly it is a result of the highest interest, that the native and permanent tendencies of the Human mind itself distinctly point to the conclusion that language must originally have been descriptive or metaphorical! Hence, also, we derive a vivid illustration of the sameness of those tendencies, as exhibited both in the latest and in the earliest ages of the world, in the trains of thought excited by new objects in the minds of the Philosophers of modern days, and in those of the simple forefathers of the Human Race, whose “Souls proud Science never taught to stray Far as the solar walk or milky way!” As we ascend from Modern into remote ages, Human Language gradually reassumes its Metaphorical character. Moreover, it will appear that the transition may be traced occurring in different classes of words at different epochs: terms for newly-discovered substances or new inventions being descriptive in all languages; terms for the most common and conspicuous objects of nature, on the other hand, not exhibiting this quality, except in the most ancient Tongues; while in specimens of Language belonging to intermediate eras, an intermediate character is observable; terms for less common and less conspicuous natural objects being more generally descriptive than they are in modern Tongues, &c. The nature and steps of this transition will be more distinctly perceived if viewed retrospectively: 1. Modern Languages.