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Show 121 The 1899 Act also provides authority for the Secretary to remove sunken vessels obstructing or endangering navigation, if such obstruction has existed for a longer period than 30 days, or whenever the abandonment of such obstruction can be legally established in a lesser space of time.260 In emergency cases of serious interference with navigation, immediate pos- session and removal or destruction of the craft may be under- taken.261 Logs and Timber.-The 1899 Act also makes it unlawful to float loose timber and logs or "sack rafts of timber and logs" in streams actually navigated by steamboats in such a manner as to "obstruct, impede, or endanger navigation."262 In the following year, this prohibition was made inapplicable where the floating of loose timber and logs and sack rafts "is the principal method of navigation," and such navigation was made subject to regulations to be prescribed by the Secretary.263 International Commissions In connection with certain boundary waters between the United States and Canada and between the United States and Mexico, relevant provisions of law so differ from those con- sidered thus far as to make desirable their separate considera- tion. International Joint Commission.-As to boundary waters between the United States and Canada, the International Joint Commission has, among others, certain duties and responsibili- ties relating to navigation. It was created by the 1909 treaty between the United States and Great Britain, the purpose of which was:264 to prevent disputes regarding the use of boundary waters and to settle all questions which are now pending 240 Act of March 3, 1899, § 19, 30 Stat. 1121, 1154, 33 U. S. C. 414. 861 § 20, 30 Stat. 1154, 33 U. S. C. 415. 288 § 15, 30 Stat. 1152, 33 U. S. C. 409. 888 Act of May 9,1900, § 1, 31 Stat. 172, 33 U. S. C. 410. 884 36 Stat. 2448. The Commission consists of six members, three repre- senting the United States and three representing Canada. |