capital necessary for the more profitable working of their mines. Having thus surveyed and located the mines now worked by the present occupants, and secured to them their titles in fee simple, without rent, regie, or seigniorage, let us now consider the proper policy as to the vast unoccupied public mineral domain. The solution of this problem divides itself into two parts: 1st, the survey and subdivision of these lands; 2d, the price and mode of sale. As to the first, I would continue the present mode of surveys by townships, sections, and quarter-quarter sections, with further subdivisions thereof. It will be best, however, to adopt the _geodetic_ system, for the following reasons: 1st, The errors in the linear surveys are much greater than in the geodetic, in nearly the ratio of yards to inches. These errors may not be very important as to sections, but, in the minute subdivisions (an acre each) into which the mineral lands should be separated, the errors of the lineal surveys could not be tolerated, and would introduce ruinous litigation as to the boundaries of valuable mines. 2d, The linear surveys give us a description only of the exterior lines of each section; but the geodetic system would inform us of the interior, enable the Government to appraise every acre, to give the proper maps, similar to those of the coast survey, and enable the people to judge of the value of each acre. The additional cost of the geodetic system would hardly reach two cents an acre. The subdivision of the gold and silver lands, should be into tracts of one acre each, continuing and extending the present system. This is by townships of six miles square, containing 36 sections and 23,040 acres. Each section contains 640 acres; and to separate them into acres, the following system should be adopted. The present subdivision is into quarter-quarter sections, of 40 acres each. These small tracts, by lines running through the centre, north and south, and east and west, I would subdivide into four tracts, each containing ten acres. These ten-acre tracts, by a line running north and south through the centre, I would divide into two equal tracts, each containing five acres; and each of these five-acre tracts, by lines running east and west, into five tracts, each containing one acre. The exterior lines, running east and west, of these one-acre tracts, would each be one hundred and ten yards long (330 feet), and the two sides running north and south, would each have a length of forty-four yards (132 feet). The form of the ten-acre tract and its subdivisions, would be as follows: TEN ACRES. 110 yards. 110 yards. 4 +---------+---------+ 4 4 |One acre.|One acre.| 4 y +---------+---------+ y a |do. |do. | a r +---------+---------+ r d |do. |do. | d s +---------+---------+ s |do. |do. | +---------+---------+ |do. |do. | +---------+---------+