The Surveyor, Volumes 21-22

Front Cover
1908 - Surveying
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Page 115 - If the square described upon one of the sides of a triangle, be equal to the squares described upon the other two sides of it ; the angle contained by these two sides is a right angle.
Page 208 - In obtuse-angled triangles, if a perpendicular be drawn from either of the acute angles to the opposite side produced, the square on the side subtending the obtuse angle is greater than the squares on the sides containing the obtuse angle, by twice the rectangle contained by the side...
Page 124 - FIFTH, by the Grace of God, of the United Kingdom of Great Britain and Ireland and of the British Dominions beyond the Seas King, Defender of the Faith, to all to whom these Presents shall come, GREETING ! Whereas...
Page 124 - Alt superanuated with Power to the said Charles Grimes to do execute and perform by himself or his sufficient Deputy or Deputies all things whatsoever belonging to the said Office. To have hold exercise and enjoy the said Office during Our Pleasure together with all Salaries Fees Perquisites Profits and advantages thereunto or of Right belonging or appertaining.
Page 208 - ... the square on the side opposite the obtuse angle is greater than the sum of the squares on the other...
Page 274 - ... —viz. the restriction in area which any man may hold. This subject has been forced upon the attention of the Legislature by defects in former systems under which one individual with means at his command could appropriate large areas, to the exclusion of his less wealthy fellow-settler.
Page 223 - ... leveling. Of these bench marks, the thirteen in the five groups at Fort Point, Sausalito, Fort Mason, Union Iron Works, and Magdalen Asylum showed an average apparent rise at the time of the earthquake of 35 millimeters (1.4 inches) as determined by Coast and Geodetic Survey leveling. As the leveling simply gives relative elevations the question arises: Does this quantity represent an average rise of the thirteen bench marks, or does it represent a settlement of the zero of the tide gauge and...
Page 26 - ... is. Take a narrow strip of paper, an inch broad or more, and 83 feet 4 inches in length, and stretch it along the wall of a large hall, or round the walls of an apartment somewhat over 20 feet square. Recall to memory the days of your boyhood, so as to get some adequate conception of what a period of a hundred years is. Then mark off from one of the ends of the strip -fa of an inch. The -fa of the inch will then represent one hundred years, and the entire length of the strip a million of years....
Page 116 - AB be divided into two equal parts in the point c, and into two unequal parts at the point D ; the rectangle AD, DB, together with the square of CD, is equal .to the square of CB.
Page 274 - Robinson, stated that he was the first to direct attention to those changes of level which depended on the season of the year. This he was led to observe from the fact that the entire mass of rock and hill on which the Armagh Observatory was erected was found to be slightly, but to an astronomer quite perceptibly, tilted or canted at one season to the east, at another, to the west. This he had at first attributed to the varying power of the sun's radiation to heat and expand the rock throughout the...

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