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tain, instead of being made with some rudimental fact around which all others arrange themselves as a center.

If we compare these geographical treatises with those made in the interest of any other great department, we shall speedily discover that they indicate knowledge rather than science; they form a mere aggregation and index of rich materials, a lexicon rather than a true text-book. And therefore ensues, despite the undenied interest of the subject and its high claims, the mechanical and unfruitful method only too common-the crowding of the memory without judgment, without thought; thence comes it that Geography has taken so low a place among our school studies, worthy only of the youngest of the pupils, and presenting little stimulus even to them.

It will be my effort, in the course of these lectures, to exhibit the subject of relations rather than to detain you with descriptions; in one word, to generalize rather than to add new details. In the lack of a thoroughly excellent text-book of geography, I shall presuppose an acquaintance on your part with the materials, so to speak, of which the science is to be constructed.

It has been a customary method to treat geography in connection with epochs of time; dealing with it as it was in the past and as it is in the present. We hear of Ancient Geography, the Geography of the Middle Ages, and Modern Geography. In this course of lectures, it will be treated not as the property of one age or another, but rather as a growth of all time, from Herodotus down to our day. It is only in this way that we can ascertain what is permanent and what is ephemeral; only in this way can we subject geography to that comparative method which has given such an impetus to the advancement of the sister sciences of Natural History; only in this way can we see how the present is the birthright of the past. Archæology, ethnography, and civil science are all gainers by this method of treatment; in one word, the whole domain of cotemporaneous study. The less positive knowledge we possess of the formative processes of science, the more crude our hypotheses, the more flagrant our errors. This is constantly verified under our eyes; the errors of the past are the wisdom of the present, and the gradual upheavals of our knowledge become indices, not less of outgrown untruths than of truths yet to be revealed.

SOURCES OF GEOGRAPHICAL SCIENCE.

The sources of geography, as of history, are twofold-established memorials and continued investigations. The study of it has this great advantage at the outset, that the surface of the earth is a standing monument of the past. We are obliged to search where all lies open; where investigation must be crowned with success. No manuscripts in this great library have perished; they all exist as legible, as accessible as ever. Moreover, personal investigation must be made by every student in order to understand the results of the investigations of others. Wherever our home is, there lie all the materials which we need for the study of the entire globe. Humboldt hints at this when he says in his Kosmos: "Every little nook and shaded corner is but a reflection of the whole of Nature." The roaring mountain brook is the type of the thundering cataract; the geological formations of a single little island, suggest the broken coast lines of a continent; the study of the boulders which are so thickly scattered in token of a great primeval deluge from the north, reveals the structure of whole mountain chains. The digging of every well may contribute to our knowledge of the earth's crust; the excavations made in the building of railroads may, without the loss of time, labor, and expense, be a ceaseless source of instruction. In the structure of a spear of grass, of a rush, of a single monocotyledon, may be studied in miniature the palm-tree, prince of the tropics; in the mosses and lichens on our walls, the stunted growths of mountain tops may be investigated. A small range of hills may be taken as the type of the loftiest Cordillera. The eye may be easily trained to see all the greater in the less. The study of our own district is the true key to the understanding of the forms and the phenomena of foreign lands. Whoever has wan dered through the valleys and woods, and over the hills and mountains of his own State, will be the one capable of following a Herodotus in his wanderings over the globe. He, and he alone, will be able, with true appreciation, to accompany travelers through all foreign lands. The very first step in a knowledge of geography is to know thoroughly the district where we live.

Unfortunately the text-books which we now possess do not discuss, with any approach to exhaustiveness, the districts where their

readers live; and hence they cannot give any true inductive generalization of the large and the remote. In ancient times, the study of geography began with the world of nature, not with the world of books. Herodotus, being 444 years B. C., became, by virtue of his investigations on his wanderings, the first critical geographer of the Greeks. Polybius traveled through the Alps and Pyrenees, Gaul and Spain, to be able to write the history of Hannibal's campaigns. He explored the Black Sea and Egypt, in quest of facts. He is the father of all military geography; the greatest strategists have busied themselves with writing commentaries on Polybius. Strabo, the most industrious geographer of his age, did not write till he had traveled from the Caucasus to the Rhone, and from the Alps to Ethiopia.

Philip Cluver, of Dantzig, who died in 1623, the true founder of classical geography, collected, by personal investigations, the materials of his great work on Germany, Italy, and ancient Sicily, all of which countries he traversed thoroughly, the classic authors in his hand.

Alexander von Humboldt has become, by his thorough studies of nature in Europe, Asia, and America, the founder of Comparative Geography. He was thoroughly acquainted with every geographical form in the neighborhood of his home, before he traveled into foreign lands. These examples show that personal investigation is one of the most reliable of all sources of geographical knowledge.

The second class of these sources is the accounts given in the published memoirs of travelers. In more primitive days than these, when very little was known regarding the earth, personal examination was easily completed, with a good degree of fullness, by almost any tourist. With the advance of knowledge, the narratives of travelers have increased, and the sum total of facts observed has become unwieldy; and, where facts have been wanting, the imagination has amply supplied their place. Of course, a single life soon became too short for the personal examination of every quarter of the globe; the narratives of those who had thoroughly explored any one were accepted as authoritative, and these accounts soon became the most generally available of all the sources of geographical knowledge. Yet, with this limitation, that now their

abundance and their exactness tend to repress and almost to destroy any personal inquiry whatever. Nothing can take the place of some exploration and investigation on the part of the student of geography.

To the accounts of scientific travelers, may be added those maps and globes which indicate the contour and the vertical elevations and depressions of the earth or its divisions. The demand for perfect accuracy in these is now very great. The map must be a portrait, not a caricature. In its way, the map has a certain dictatorial authority; it is so decisive in its very character, that errors in it are far more dangerous than in the letter-press of books. The English excel in the beauty of their maps: there are none in the world engraved with the rare excellence of theirs; but their care to secure accuracy is not commensurate. The French and the Germans vie

for the honor of perfectly transcribing nature.

THE SCIENCES ILLUSTRATIVE OF GEOGRAPHY.

The sciences which are called in to illustrate the thorough study of geography have largely increased in number within the past few years. They are, for the most part, the same which illustrate history; to which may be added mathematics and natural history. It is a very great mistake to suppose that all that bears upon geography can be crowded within the covers of a single book. It is commonly supposed that geography is a matter of memory. Even in its elementary forms, it is capable of a constructive treatment. Many a teacher, who has not paid special attention to this department, dreams that he can qualify himself by running through a single text-book. No philologist would dream that, with a grammar and dictionary, he could grasp any constructive theory of language. There must first be the study, comparatively, of the great classes. And in geography, the personal study of the earth, with critical closeness, and in the comparative method, is the true way.

Another very common error is, that geography must subsidize what is most striking in other sciences, and thereby gain its charms and attain its uses. Thus geography becomes everything-history. statistics, statecraft, physics, a catalogue of all the possessions of natural history, in all its kingdoms. It takes on all colors, and meanwhile loses its own. It merges all its individuality in other

provinces. In no way can it escape this disintegrating force, unless by holding fast to some central principle of being; and that is the relation of all the phenomena and forms of nature to the human race. It cannot exist, if it is to be merely an aggregate of all science, a mosaic of all colors. It is to use the whole circle of sciences to illustrate its own individuality, not to exhibit their peculiarities It must make them all give a portion, not the whole, and yet must keep itself single and clear.

For the comprehension of mathematical geography, a knowledge of the elements of mathematics and astronomy is indispensable. For determining localities, and for using many needed instruments, there must be some skill in practical astronomy; for measuring distances, for projecting maps and charts, and locating geographical districts upon them, there must be some familiarity with trigonometry and the higher mathematics. No one can thoroughly study geography in foreign lands, and leave all astronomical instruments behind.

Political geography demands an acquaintance with history, and the same helps which the study of history requires. The civil status of no country can be determined without this. Büsching's Europe" was a master-piece of its time. But it was impossible for even that book to compress within its covers the whole history of that continent in its relation to the geography of Europe.

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The study of Man is, of course, in most intimate alliance with geography. It is only since the opening of this century that ethnography has become a prominent and clearly defined province of science, and enabled to become a great tributary of geography; in fact, the greatest tributary. Other departments are also drawn upon; there can be no close study of the soil, the structure of mountains and plains, without mineralogy and geology. Meteorology, too, the science which discusses the climatic conditions of countries and the effects of climate upon the organization of plants, animals, and man, is of no mean value in illustrating geography. Nor can one be a great geographer who does not understand the flora of the world. Not that he needs to be familiar with the myriads of plants, but the laws of growth and the characteristics of localization must be known. The geographer does not need to repeat in detail where the cereals and the palm-tree thrive. The general conditions which

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