Section 387, act Aug. 1, 1912, ch. 269, § 1, 37 Stat. 242 , related to limiting association placer-mining claims. Section 388, act Aug. 1, 1912, ch. 269, § 2, 37 Stat. 243 , related to restrictions on power of attorney to locate placer-mining claims. Section 389, act Aug. 1, 1912, ch. 269, § 3, 37 Stat. 243 , related to restrictions on placer locations. Section 390, acts Aug. 1, 1912, ch. 269, § 4, 37 Stat. 243 ; Mar. 3, 1925, ch. 442, 43 Stat. 1118 , related to area and shape of placer claims. Section 391, act Aug. 1, 1912, ch. 269, § 5, 37 Stat. 243 , related to placer locations in violation of law. See, now, sections 35 to 37 of Title 30, Mineral Lands and Mining.