The United States obtained from the Republic of Mexico by the treaty of Guadalupe Hidalgo, on the 2d of February, 1848, and by the treaty of Masilla, known as the Gadsen purchase, dated December 30, 1853, all the property included in what is now the states of California, Colorado, Utah, Wyoming, and Nebraska, and the terri- tories of new Mexico and Arizona; and by these treaties the United States agreed to protect and recognize the rights of prop- erty of every kind belonging to Mexicans that was situated in the ceded territory. Under the stipulations contained in the treaty of Guadalupe Hidalgo, congress, on March 3, 1851, passed a law to determine the validity of private land grants in the state of California; and on March 8, 1891 (26 Stat. L. 854), it passed a law for the settlement of title to private land grants under both treaties, entitled "An act to establish a court of private land claims and to provide for the settlement of private land claims in certain states and territories." By this act all persons claiming rights protected by the treaties, whether their title was complete and per. fect or incomplete and inchoate, are given the right to present their claims and have the validity thereof ascertained and deter- mined by the court. These private land claims originated from grants and cessions made by Spain to various settlers, emigrants, and citizens up to the treaty of Cordoba, August 24, 1821 (which was the initiation of the sever- ance of Mexico from Spain, and which culminated, after many desultory revolu- tions, in the complete independence of Mexico, by the adoption of the new con- stitution on October 23, 1835), and from various sales and grants, made by the Mexican government, both under the mon- archy and under the republic, from 1835 down to the treaty of Guadalupe Hidalgo on February 2, 1848. These various sales and grants of public lands may be conveniently divided into the first and second epoch of the Central System of Government, beginning on Oct. 3, 1835, when all legislatures were abolished and departmental councils (juntas) were established, and (December 29, 1836) when the new constitution was adopted, which divided the national territory into depart- ments, provided for the appointment of governors and the election of depart- mental councils and defined their powers, and running down to August 4, 1846, when the constitution of 1824 was re-established. It was at this time (August 18, 1846) that General Kearney entered Santa Fe and took possession of New Mexico in the name of the United States. This period marks the end of the first epoch of the central system of government. From that time, March 17, 1853, there was a succession of revolutions and counter-revolutions, culminating in the election of Santa Anna as president of the republic, from which time dates the be- ginning of the second epoch of the cen- tral system of government. Many of these claims are conflicting in their nature; many of them which were granted by one government were declared null upon the inauguration of another, and as each revolution succeeded the other, at- tempts were made to undo everything that had been done during the lease of power by the other forces, so that the titles to the lands of that portion of the United States obtained through the treaty of Guadalupe Hidalgo and the Gadsen purchase, having for their foundation the grants made by Spain and the various suc- ceeding governments of Mexico, were in an almost hopeless state of confusion and uncertainty, rendering the passage of the act of March 3, 1891, establishing the court of private land claims, for the purpose of passing upon these titles, at once a neces- sity and a boon. For a history and compilation of the various Spanish and Mexican land laws, see Reynolds on Spanish and Mexican land laws, passim. This work, compiled by the United States attorney for the court of private land claims, contains, in addition to the court of private land claims act and the rules of practice in that court, an historical sketch of new Spain and New Mexico and old Mexico under its Spanish dominion and subsequently, together with a translation of all of the Spanish and Mexican land laws, and to any one inter- ested in these matters it will be found to be an invaluable aid. Court of Private Land Claims. By the act of March 3, 1891 (26 Stat. L. 854). congress created a court of private land claims. The court is composed of a chief justice and four associate justices, ap- pointed by the president of the United States. The United States are represented by a United States attorney appointed by the president to protect the interests of the government in litigation before that court. The jurisdiction and method of procedure is specifically pointed out in section 9 of the act. The jurisdiction embraces all claims for lands within the limits of the territory derived by the United States from the republic of Mexico, and now embraced within the territories of New Mexic