Problems of the Panama Canal: Including Climatology of the Isthmus, Physics and Hydraulics of the River Chagres, Cut at the Continental Divide and Discussion of Plans for the Water-wayMacmillan, 1905 - 248 lappuses |
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acre-feet Alhajuela annual April Atlantic August average Basin above Bohio Boca Bridges and Routes cent Chagres River coast Colombia Colon Comité Technique construction continental divide Corps of Bridges cubic feet cubic metres cubic yards Culebra curve December discharge downfall and drainage dry season element entire estimated excavation February feet above low feet per second figures flood flow freshets Gamboa gaugings ground water height important inch-miles inches Isthmian Canal Commission Isthmus of Panama January July June La Boca Lake Bohio latter less locks low water lower Manchester Ship Canal March maximum mean tide minimum months Nicaragua Canal Nicaragua route noon November observations ocean October Old Company Pacific Panama Canal Company pany projected rain rainy season records regulation rise rock San Juan river sea level September slope square miles stream subbasin summit level Table temperature tion transit traversed volume width winds yellow fever
Populāri fragmenti
19. lappuse - Commission is of the opinion that ' the most practicable and feasible route ' for an Isthmian canal, to be ' under the control, management, and ownership of the United States ' is that known as the Nicaragua route.
228. lappuse - It may safely be affirmed that the Chagres River is no longer an element of danger, but is rather a useful friend, whose assistance will be of great value to the canal in its operation.
221. lappuse - ... cubic yards. The cost of such a canal, including a dam at Alhajuela and a tide lock at Miraflores, near the Pacific end, is estimated at not less than $240,000,000. Its construction would probably take at least twenty years. This Commission concurs with the various French commissions which have preceded it since the failure of the old company in rejecting the sealevel plan. While such a plan would be physically practicable, and might be adopted if no other solution were available, the difficulties...
iii. lappuse - Problems of the Panama canal; including climatology of the isthmus, physics and hydraulics of the river Chagres, cut at the continental divide and discussion of plans for the waterway.
230. lappuse - Thus it can not be considered that this pest is really epidemic on the isthmus. From the other infectious epidemics, such as variola, typhoid fever, diphtheria, etc., the isthmus appears to be almost entirely exempt. From the foregoing we may conclude that life on the isthmus scarcely incurs more dangers than elsewhere, even for Europeans who. after the blacks of the British Antilles, appear to resist the climate best. Residence here would, then, offer nothing alarming, were it not for a constant...
235. lappuse - Especially would this be so on Mr. Menocal's plan, which did not propose to go down to rock formation, but to have "a dam of loose rock," which, Admiral Walker says, "would have to be enormous in size; it would be like moving a hill into the river." Of course, as was afterwards discovered, by going 80 feet below the bottom of the river, a dam could be built 190 feet in full height at a cost as yet unestimated. As for the San Francisco embankment line, General Hains regards it "as the most dangerous...
25. lappuse - ... sensibly at the same level, and through this arm all shipping must pass, the depth of water depending wholly on the stand of the lake. This stand is now subject to a natural oscillation of about 13 feet. Under the projected conditions the entire outflow must pass over the dam at a distance of...
211. lappuse - It was considered best to avoid, if possible, so great a depth of foundation. A site was found a few hundred feet farther downstream where the length of the dam would be considerably greater than at the former site, but the greatest depth to rock revealed by the borings was only 128 feet below sea level. The line runs from a point near the railroad station at Bohio, on the east side of the river, straight across to the rocky hill on the west side.
184. lappuse - The ground water must be taken into account in order to understand all the peculiarities of flow. A very important effect of forests is in increasing the ground-water flow.
78. lappuse - ... The rate of fall is more gradual than at Alhajuela, the mercury receding at sunset in the dry season only to about 86° and in the rainy season only to about 83°. In short, the changes on the Pacific coast are less extreme and are later than in the interior, but the daily average is about the same. "An annual rainfall of about 140 inches may be expected on the Atlantic coast, about 93 inches in the interior, and about 60 inches near the shores of the Pacific. There is a well-defined dry season,...