“ This seems to have been the only contention submitted to the court of appeals, and upon careful consideration the court decided against the contention upon the Act of 1899, and, in analogy, upon other acts of Congress in relation to the public lands, and also upon the rules and decisions of the Land Department. It is not necessary to repeat the reasoning of the court. What was a description having 'a reasonable degree of certainty' was to be determined by the circumstances. ”

“ Classification is characterization through the selection of some quality or feature, and therefore lands may be classified as pasture (grazing) , timber, arable, or mineral. It is determined by surface indications. Minerals may be hidden under any surface, but a surveyor is not expected to explore for them, that he may include or exclude reference to them in his reports. ”

“ It was provided (§ 4) that upon the filing by the railroad company of the selection at the local land office, and payment of fees prescribed by law in analogous cases, and the approval by the Secretary of the Interior, he should cause a patent to issue to the company, conveying to it the lands so selected ”