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Rh astronomy, in which the study of the lowest stages, as influencing the practical acceptance of the higher, cannot be thus carelessly set aside.

If we survey the state of educated opinion, not within the limits of some special school, but in the civilized world at large, on such subjects especially as relate to Man, his intellectual and moral nature, his place and function among his fellow-men and in the universe at large, we see existing side by side, as if of equal right, opinions most diverse in real authority. Some, vouched for by direct and positive evidence, hold their ground as solid truths. Others, though founded on crudest theories of the lower culture, have been so modified under the influence of advancing knowledge, as to afford a satisfactory framework for recognized facts; and positive science, mindful of the origin of its own philosophic schemes, must admit the validity of such a title. Others, lastly, are opinions belonging properly to lower intellectual levels, which have held their place into the higher by mere force of ancestral tradition; these are survivals. Now it is the practical office of ethnography to make known to all whom it may concern the tenure of opinions in the public mind, to show what is received on its own direct evidence, what is ruder ancient doctrine reshaped to answer modern ends, and what is but time-honoured superstition in the garb of modern knowledge.

Topic after topic shows at a glimpse the way in which ethnography bears on modern intellectual conditions. Language, appearing as an art in full vigour among rude tribes, already displays the adaptation of childlike devices in self-expressive sound and pictorial metaphor, to utter thoughts as complex and abstruse as savage minds demand speech for. When it is considered how far the development of knowledge depends on full and exact means of expressing thought, is it not a pregnant consideration that the language of civilized men is but the language of savages, more or less improved in structure, a good deal extended in vocabulary, made more precise in the dictionary definition of words?