386 



PRACTICAL LESSONS IN SCIENCE. 



square miles, or sections, which are numbered from 1 to 36, 

 inclusive; as shown in the diagram below. 



The township is not perfect in form, neither is the section, but 

 the township is so divided as to throw most of the irregularity 

 into the north and west tiers of sections which are often frac- 

 tional, and there are fractional sections along lakes and large 

 streams of water. 



A section contains about 640 acres. It is divided by lines 

 through the center, parallel to its sides, into quarter sections of 

 160 acres each, and these into quarter quarters of 40 acres each, 

 and so on as far as desirable. 



A section is one mile, 80 chains, 320 rods, or 5,280 ft. square, 

 the quarter section is one-half mile, 40 chains, 160 rods or 2,640 

 ft. square, and the quarter quarter is 80 rods or 1,320 ft. 



