Calendar: 1879-1880 Page 634

634 APPLIED SCIENCES miles 40 chains the gradient height was 32745 feet at miles 30 chains 23585 feet at miles 60 chains 168-45 feet at 12 miles 20 chains 22056 feet -required the several rates of inclination Required the cubic contents of the following embank- ment all distances being measured from the beginning Chains Feet At 16 14 18 24 30 40 30 60 24 85 10 150 220 Note -Bidder's Tables may be used here SECOND YEAR base line measured on an elevated plain 4000 feet above sea level is found to be miles long required its true length Describe the theodolite and its adjustments When survey is plotted to scale of chains to inch how much larger is the actual ground than the plan An isosceles triangle contains 300 acres the included angle contains 30 required the length of the base The length of the side of an isosceles triangle was mile and the angle observed at the base 70 required the area Construct Vernier to read to 20 seconds the graduated limb being divided into thirds of degree Convert 35 acres roods 28 poles statute measure to Devonshire measure The variation being 14 the following magnetic bearings were observed 52 Ε 16 12 42 Required the true bearings