SURVEYING 17 



A good map is a means of recording the location of drains 

 and water pipes laid beneath the surface of the ground. It 

 will also enable the farmer to direct the work of the farm 

 more easily, and to make a study of the most convenient 

 arrangement of fields and buildings. This method is used 

 by architects and engineers in planning buildings and 

 engineering work such as factories and railroads. 



Divisions of Agricultural Surveying. The work of mak- 

 ing a survey resolves itself into three stages or operations, 

 as follows : 



1. Measuring and recording distances and angles, involv- 

 ing the use, care, and adjustment of the instruments used in 

 the survey. 



2. Drawing the tract surveyed to a suitable scale, or 

 proportion. 



3. Calculating the areas of the tracts surveyed. 



QUESTIONS 



1. What is the object of agricultural surveying? 



2. Define a survey. 



3. To what use can a knowledge of surveying be put by those con- 

 nected with agriculture? 



4. In what way will a map be of use to the land-owner? 



5. Describe the three divisions of agricultural surveying. 



