. Index to the reports of the chief of engineers, Army (including the reports of the Isthmian Canal Commissions, (1899-1914) 1866-1912 ... . sequentially by time. The attemptis to provide a clear and intelligible outhne, so far as this can be donein a summary, of what has been proposed, or of what has been directedby Congress. Included in the matter are estimates of funds and timerequired. Changes in conditions, with a consequent modification of plans, arerecorded. It should be borne in mind, in considering the data under thisheading, that the adoption of an engineers plan by Congress may


. Index to the reports of the chief of engineers, Army (including the reports of the Isthmian Canal Commissions, (1899-1914) 1866-1912 ... . sequentially by time. The attemptis to provide a clear and intelligible outhne, so far as this can be donein a summary, of what has been proposed, or of what has been directedby Congress. Included in the matter are estimates of funds and timerequired. Changes in conditions, with a consequent modification of plans, arerecorded. It should be borne in mind, in considering the data under thisheading, that the adoption of an engineers plan by Congress maymean a considerable modification of the method proposed or theresults aimed at according to whether Congress makes provision forthe carrying out of the plan, as proposed precisely by the engineer,or in any other way. This has reference to the frequent changes inestimates. Surveys.—The matter under this title is meant to be a completeouthne of all examinations and surveys made pertaining to thewaterway. RIVER AND HARBOR WORKS. NORTH ATLANTIC. A.—PORTLAND, ME., DISTRICT. 23 24 INDEX TO EEPOETS, CHIEF OF ENGINEBES, TJ. S. AEMY, rSee pp. 14-22 for!Lexplanations, EIVEE AND HAEBOR WOEKS. 25


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