If the line ends at E, measure the distance from E to A, fo that EB is one straight line, the notes will ftand thus: It is best to dig holes of different shapes for marks, in which poles may be placed, if a pole be removed by accident the hole will remain. In taking small surveys, the different marks are eafily remembered, but if the lines are of a confiderable length, the fhape of the mark dug in the ground must be entered in the Field-book thus: AA BAC DV E F G H I K L M+ &c. &c. No poles fhould be left ftanding but fuch as ferve for marks. Many perplexing errors occur with young young Surveyors, from changing the rods improperly. The leader must not ask for the rods till he wants one to put down and has not got one; the leader and follower muft then let the chain drop on the ground, meet each other half way, and each of them tell there are ten; the leader muft then return to his place and put down a rod. It is best to note down every change thus: 1000, 2000, 3000, &c. if this is neglected, in measuring long lines an error of ten chains is very likely to happen. If at any time a rod is loft, return at once to the last mark and measure over again. By observing this rule much time will be faved, and many perplexing errors avoided, |