RESURVEYS MISLEADING MARKS. 83 



There are many exceptions to the simple rectangular 

 scheme as outlined above, and many different anoma- 

 lous townships and sections result from methods which 

 have to be employed in special cases. 



BE SURVEYS. 



When a survey is to be made in a township which has 

 been subdivided, or when the lines of old survey bound- 

 aries are to be retraced, the prime object is to follow all 

 of the legal lines and to check up on all of the legal cor- 

 ners. For this purpose the surveyor should know: 



(1) The date when the original survey was made. 



(2) The variation used. 



(3) The change in variation, increase or decrease, 

 since the original survey was made. 



In any Western State this information may be ob- 

 tained from the surveyor general, and usually from the 

 county surveyor of the county in which the survey is 

 to be made. In any event the new variation, as deter- 

 mined by the resurvey, should be entered in the field 

 notes for future reference. 



CANCELLATION OF MISLEADING MARKS ON 

 FORMER FOREST BOUNDARY POSTS. 



Forest officers are cautioned that the agreement be- 

 tween the General Land Office and the Forest Service in 

 regard to the cancellation of certain misleading markings 

 on National Forest boundary posts does not extend to 

 any of the existing regulations against changing 

 markings on any posts other than as herein specified 



