A Text-book of Plane SurveyingAmerican Book Company, 1896 - 485 pàgines |
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Frases i termes més freqüents
adjustment alidade assumed azimuth base line bubble c. d. L celestial sphere chain clamp colog compass computed contour contour lines coördinates corners correct curve declination determined Diff direction Dist distance division dumpy level elevation equal equation eyepiece field figures given graduated ground Gunter's chain head chainman hence horizontal hundred feet inches instrument intersection known latitude latitude and longitude line of collimation line of sight located logarithmic longitude differences magnetic magnetic declination mantissa marked measured meter method monuments motion moved necessary needle notes observed opposite parallel perpendicular plane plate plumb line position prismoid protractor river rule scale screws shown in Fig side sine slide square stadia stakes station surface surveyor tangent tape telescope tion transit triangle trigonometric functions tube usually vernier vertical angle west from Greenwich wire zero ΙΟ
Passatges populars
Pàgina 349 - But there are many little lakes or ponds which are gradually disappearing, and the shore proprietorship advances pari passu as the waters recede. If these are of any considerable size, — say, even a mile across, — there may be questions of conflicting rights which no adjudication hitherto made could settle. Let any surveyor, for example, take the case of a pond of irregular form, occupying a mile square or more of territory, and undertake to determine the rights of the shore proprietors to its...
Pàgina 349 - Reports.) But such rights are not generally considered proper subjects of sale, but, like the right to make use of the public highways, they are held by the State in trust for all the people. "What is said of the large lakes may perhaps be said also of many of the interior lakes of the State; such, for example, as Houghton, Higgins, Cheboygan, Burt's, Mullet, Whitmore, and many others.
Pàgina 216 - All navigable rivers within the territory occupied by the public lands shall remain and be deemed public highways, and in all cases where the opposite banks of any stream not navigable belong to different persons the stream and the bed thereof shall become common to both.
Pàgina 343 - Extinct interior section corners must be re-established at the intersection of two right lines joining the nearest known points on the original section lines east and west and north and south of it. " Third. Any extinct quarter-section corner, except on fractional lines, must be re-established equidistant and in a right line between the section corners ; in all other cases, at its proportionate distance between the nearest original corners on the same line.
Pàgina 222 - ... in whose district suc,h land is situated, and where the change is intended to be made, under such rules and regulations as the President may prescribe, to cause the...
Pàgina 348 - ... bank owners are fixed by their purchase; when making that, they have a right to understand that all land between the meander lines, not separately surveyed and sold, will pass with the shore in the government sale and, having this right, anything which their purchase would include under it cannot afterward be taken from them. It is believed, however, that the Federal courts would not recognize the applicability of this rule to large navigable rivers, such as those uniting the Great Lakes. On...
Pàgina 341 - ... mistakes ; and long rows of monuments should have been perfect guides to the place of any one that chanced to be missing. The truth unfortunately is that the lines were very carelessly run, the monuments inaccurately placed ; and, as the recorded witnesses to these were many times wanting in permanency, it is often the case that when the monument was not correctly placed it is impossible to determine by .the record, with the aid of anything on the ground, where it was located.
Pàgina 344 - ... in the original survey of the town plat; or a surveyor settling in the town may take some central point as the point of departure in his surveys, and assuming the original plat to be accurate, he will then undertake to find all streets and all lots by course and distance according to the plat, measuring and estimating from his point of departure. This procedure might unsettle every line and every monument existing by acquiescence in the town; it would be very likely to change the lines of streets,...
Pàgina 358 - River, in latitude 40° 00' 30" north, and longitude 90° 28' 45" west from Greenwich, and with the base line running west from the initial point, governs the surveys in Illinois west of the Illinois River and west of that part of the third principal meridian which lies north of the river. The fourth principal meridian also extends north through Wisconsin and northeastern Minnesota, and, with the south boundary of Wisconsin as its base line, governs all the surveys in the former and those in the...
Pàgina 346 - ... actually conforming their occupation to his lines, the action will conclude them. Of course, it is desirable, that all such agreements be reduced to writing ; but this is not absolutely indispensable if they are carried into effect without. Meander lines. — The subject to which allusion will now be made, is taken up with some reluctance, because it is believed the general rules are familiar. Nevertheless, it is often found that surveyors misapprehend them, or err in their application ; and...