246 



How THE FAKM PAYS. 



The number of hours required for the rising of cream at the> 

 different temperatures are found by actual experiment in our dairy 

 to be as follows: 



At 45 degrees, in deep pails set in ice water, as 



used in our dairy, all the cream will rise in ... 12 hrs. 



50 degrees 14 " 



55 " 16 " 



At 62 degrees, in shallow pans, in 24 " 



"55 " " " 30 " 



"50 " " " 36 " 



It is an ascertained fact, in this respect, that the sudden cooling of 

 the milk set in deep pails in ice water is the cause of the rapid rising 

 of the cream; if the pails are set in the air, and not in water, and are 

 consequently cooled very slowly, the cream will not rise completely 

 in forty-eight hours at the same low temperature. 



A cord contains 128 cubic feet. 



A cubic foot contains 1,728 cubic inches. 



A struck bushel contains 2, 150 cubic inches. 



A heaped bushel contains 2, 750 cubic inches. 



An acre contains 43,560 square feet, or 4,840 square yards. 



A square acre measures very nearly 70 yards or 210 feet on each, 

 side. 



A 10-acre field is 40 rods, or 220 yards, or 660 feet, on each side. 



To double the length of the side makes four times the area of a 

 field. 



A circle encloses the largest space of any figure for the same length 

 of line. A circular cistern, therefore, is the cheapest. The following 

 table gives the difference of 



AREAS OF SQUARE AND ROUND CISTERNS. 

 Round. 



Square, 



