APPENDIX II 



166 



8. THE TOTAL PRODUCE OF CROPS.^ 



The total produce of the crops of the different years cannot be 

 directly compared unless the amounts of corn, roots, hay and straw 

 be reduced to a common unit* This has been attempted in the 

 following way. As unit is taken one ton of corn, which has been 

 named a *' unit of crops." The various crops are considered in 

 respect to their value as food for cattle, based on the results of 

 many years' investigations. Equal weights of different kinds of 

 corn are considered to have equal value. The " total solids " in 

 roots have the same value as an equal weight of corn. Hay and 

 straw also are converted into " units of crops " according to their 

 value as food, 2J tons of hay and 5 tons of straw being taken as 

 equal to one ton of corn or one " unit of crops.'* 



In this way the average annual total produce of crops has been 

 estimated for the following five-yearly periods to be — 



9. AVERAGE YIELD « 

 IN Bushels per Acre. 



IN Tons per Acre.' 



1 Statistiske Meddelelser, 4 Roekke, 63 Bind, 3 Hoefte, p. 17-20. 

 « " Statistisk Tabelvoerk," 6 Roekke, Litr. C. No. 4, " Landbrugsforhold i 

 Danmark ; '" and " Statistiske Meddelelser," 4 Roekke, 36 and 49 Bind, 4 Hoefte. 

 3 1897-1904. 



