FIELD NOTES. 45 



the first page. If it contains the notes of more than 

 one survey, the title of a survey should be written at 

 the top of each page, and the book should be indexed 

 on the first page. Each book should be numbered and 

 paged. When the notes for a survey do not follow in 

 regular order in a notebook be sure to refer to the page 

 where the continuation can bo found and at that point 

 refer back by page number to the former notes. 



It is a good plan to make numerous explanatory 

 sketches on the right-hand pages of the notebooks, leav- 

 ing nothing to the memory, and particularly the direc- 

 tion of the flow of streams should be shown by arrows. 

 If the surveyor will always imagine that he might stop 

 work at any moment, and some one else may be obliged 

 to continue the survey, and will keep his notes so clearly 

 that this would be easy, then they are apt to be a re- 

 iable record. Never erase notes cross them out and 

 mark them "abandoned." 



Field notes should never be crowded into a notebook 

 or be written as a continuous recital, but should be 

 tabulated clearly that they may be readily platted by 

 any surveyor or draftsman. A good form for keeping 

 notes is here shown. 



SPECIMEN NOTES. 



. National Forest. 



Resurvey of east boundary of sec. 24, T. 19 N., R. 14 E. 



June 16, 1912. 

 Weather clear. 



I corrected both aneroids at the benchmark at .... which 

 has an elevation of .... ft. 



Made camp 5.30 p. m. Sec. 24, T. 19 N., R. 14 E. 

 7 p. m. Camp barometer reads 4,850 / . 

 Field barometer reads 4,860'. 



At 9 p. m. observed Polaris and find the variation at camp to 

 be 19 east. 



