Part 140

Yellowstone Park includes within its borders the largest geysers in the world. There are about seventy in all, included in six groups or geyser basins. Norris, Upper, Middle and Lower basins, ten to fifteen miles apart, are on the headwaters of the Madison, here called Five Hole River. The Upper is most active and is called the Great Geyser Basin. A group is also found at Shoshone Lake, at the head of Snake River, and another group at Heart Lake. Fifty geysers spout water and steam from thirty to two hundred and fifty feet into the air. Some spout from open bowl-shaped basins, and others have built cones or tubes by their deposits. Extinct geysers are marked by the remains of these cones, among which is Liberty Cap. Excelsior geyser is the largest of all. It has a bowl-shaped opening two hundred by three hundred feet, flows four thousand gallons of boiling hot water per minute, and throws a fifty-foot column of water and steam seventy-five feet to two hundred and fifty feet high. Giant throws a five-foot column over two hundred feet high for an hour. Old Faithful, so named because of its exceptional regularity, every sixty-four to sixty-five minutes without a failure within the memory of the oldest observers, discharges a column one hundred and fifty feet high amounting to one and a half million gallons of water at each eruption. There is every gradation in size and violence and periodicity.

In the Mammoth Hot Springs area, near the northern boundary, where there are fifty active springs within an area of one hundred and seventy acres, there is a travertine accumulation of one thousand feet. Others deposit silica in similar manner, both types aided much by algous plant growth in the mineralized warm waters. In some places sulphur has been deposited.

Nine-tenths of the whole area is forest. The tree limit varies from nine thousand four hundred to nine thousand seven hundred feet. Few of the plateau localities are bare. Pine, poplar, balsam, cedar and spruce grow abundantly and many to large size. In the spring and geyser localities the trees are often covered by deposits and buried. Whole forests have been thus entombed. Petrified trees are common. Wild animals are wholly unmolested. Deer, elk, buffalo and bear may be seen and approached near enough to photograph. Trout abound in the waters throughout.

The first white man to attempt an exploration of the region was a trapper named Coulter, who in 1805 traversed a part of this district. His tales were disbelieved, but were confirmed thirty years later by the discoveries of Bridger. In 1870 the first official survey was made, and in 1871 Hayden’s famous expedition revealed the glories of the Yellowstone district.

=Climate and Irrigation.=--The United States, stretching over such a vast area and having such great tracts of mountain and plain, must necessarily present a great variety of climate. The mean annual temperature ranges from under forty degrees to seventy-five degrees. The isotherm of fifty-five degrees mean annual temperature crosses the center of the country from east to west, passing through St. Louis. The mean annual rainfall for the whole country is about thirty inches, but there is a great difference in this respect between different parts. The rainfall is most abundant on the northwest Pacific Coast, on the Gulf Coast, and on the higher mountain ranges. On the great plains it is only ten to twenty inches, and there are large desert stretches in the Rocky Mountain region with a rainfall of less than ten inches.

=Irrigation.=--As far as lack of rainfall is concerned in the so-called rainless regions of the United States, this has been notably offset by great works of irrigation that have been steadily going forward. Agriculture, horticulture and vitaculture are, therefore, no longer dependent on chance but science, as the National Irrigation Congress expresses it.

Modern irrigation in the United States began in 1750 with the watering of the gardens in the hills and deserts of the coast of California by the adventurous missionaries from Mexico. Irrigation by English-speaking people had its origin in Utah one hundred years later. There the Mormons, separated by one thousand miles of untrodden desert from all cultivated land, found in irrigation their only means of escape from starvation.

In 1870 there were twenty thousand acres under irrigation, followed by a rapid development of small ditches, until in 1880 there were one million acres irrigated. Today (1917) upward of fifty million acres are included in reclamation projects, and it is estimated that there are upward of four hundred and fifty million acres still awaiting the scientific use of water.

The diversity of methods used in irrigation in the United States is remarkable. Practically every system to be found in the world can be seen in some part of the arid west. This is due to the fact that many of the irrigators have come from distant parts of the world and each seeks to introduce on his farm customs and practices of his old environments. This is particularly noticeable in California, where the Chinese irrigate their truck gardens in Chinese fashion, and Italians, Spaniards and Mexicans imitate for a time at least the practices of their forefathers.

Upward of one hundred and fifty thousand miles of irrigation canals, with reservoirs and supplementary works, have been built at a cost of more than six hundred million dollars. These projects are distributed through the States of Arizona, California, Colorado, Idaho, Kansas, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington and Wyoming. The most notable among them are: the Truckee-Carson Canal and Reservoir, in Nevada; the Minidoka project, in southern Idaho; that of the Uncompahgre Valley, in Colorado; the Roosevelt Dam, in the Salt River Valley, Arizona; the Klamath Reservoir, on the Oregon-California boundary; the Boisé project, Idaho; that of Yuma, on the Arizona-California boundary; North Platte, on the Nebraska-Wyoming boundary; and the gigantic Elephant Butte Reservoir, in New Mexico--the second largest in the world.

=Political Divisions.=--Under its present organization the United States comprises fifty-one political divisions. Of these forty-eight are states enjoying the full privileges afforded by the federal constitution. The three territories--Alaska, Hawaii and Porto Rico--all are organized but not yet admitted to statehood. The Philippines have a modified territorial government.

(See Tables appended.)

It is worthy of remark that the center of population advanced westward during the ten decades since 1790 in a nearly uniform line along the thirty-ninth parallel of latitude.

=THE CENTER OF POPULATION=

======+=============================================+============== CENSUS| | FROM POINT YEAR | |TO POINT IN | APPROXIMATE LOCATION BY IMPORTANT TOWNS |DIRECT LINE[9] ------+---------------------------------------------+-------------- 1790 |Twenty-three miles east of Baltimore, Md. | ... 1800 |Eighteen miles west of Baltimore, Md. | 40.6 1810 |Forty miles northwest by west of Washington, | |D. C. | 36.9 1820 |Sixteen miles north of Woodstock, Va. | 50.5 1830 |Nineteen miles west by southwest of Moore- | |field, W. Va.[10] | 40.4 1840 |Sixteen miles south of Clarksburg, W. Va.[10]| 55.0 1850 |Twenty-three miles southeast of Parkersburg, | |W. Va.[10] | 54.8 1860 |Twenty miles south of Chillicothe, Ohio | 80.6 1870 |Forty-eight miles east by north of Cincin- | |nati, Ohio | 44.1 1880 |Eight miles west by south of Cincinnati, Ohio| 58.1 1890 |Twenty miles east of Columbus, Ind. | 48.6 1900 |Six miles southeast of Columbus, Ind. | 14.6 1910 |In the city of Bloomington, Ind. | 39.0 ------+---------------------------------------------+-----------

[9] Movement in miles during preceding decade.

[10] West Virginia formed part of Virginia until 1860.

=Public Lands.=--The United States originally owned nearly all the area of the states, with the exception of the original thirteen. Homesteads have been given, or sold at a nominal price, to all bona fide settlers. Vast areas have been given to railroad companies and in aid of education. The country’s Indian wards have been provided with ample reservations. The government has established great national parks, and it has reserved more than seventy-two thousand square miles of forest land.

The following tabulations give numerous important facts concerning the states and territories:

=TABLE OF STATES AND TERRITORIES OF THE UNITED STATES=