Calendar: 1872-1873 Page 554

APPLIED SCIENCES 555 Given the following depths of cutting cb at 0-00 feet Λ at 4-20 10 feet Slope to centre at 10-00 12 feet width 30 feet at 15-00 feet How many cuhe yards Given the following heights and distances required rates of inclination and how much per mile in each case At 100 feet 13 200 feet 180 feet 100 feet 100 feet What is meant by level line and why urbt ing SECOND YEAR In the event while measuring base line of your meeting with river bow would you measure across and how would you measure through wood and continue your base line afterwards Explain and illustrate by diagram the mode adopted for reducing base on an elevated plain to the level of the sea Planted theodolite on the top of hill the line of sight feet above the ground noticed that the top of spire of church 5$ miles distant was on an apparent level with the line of sight How much higher was the church spire than the ground where the instrument was placed Find the length of base of an isosceles triangle whose sides bear 16 and 16 and whose area is 250 acres What is meant by the variation of the needle Given tbe variation 24 convert into true bearings the following magnetic bearings 16 74 50 72 Two church spires have one an angle of elevation of