2 BULLETIN 695^ U. S. DEPARTMENT OF AGRICULTURE. 



to internal trade in the accounting. The shipments of potatoes be- 

 tween these possessions and contiguous United States if any, are too 

 small to affect the results appreciably as apphcable to contiguous 

 United States, and hence are not added to imports or domestic ex- 

 ports, as the case, may be, beginning with the years mentioned, to 

 determine the full movement into and from contiguous United States. 

 The Phihppine Islands have always been treated as a foreign country 

 in the foreign trade statistics of the United States. 



Year. — Of production: Year of planting, growth, and harvest. 

 Of foreign trade: Fiscal year beginning July 1. Hence, the year of 

 production is approximately related to the year of foreign trade, of 

 supply, and of consumption. 



Population. — Confined to contiguous United States, June 1 esti- 

 mates for noncensus years before 1910, and also for 1910 and later 

 years, the census date for 1910 being April 15 instead of June 1 for 

 many preceding censuses; supplied by Bureau of the Census. 



Acreage. — Bureau of the Census: 1889 and later decennial census 

 production years. For 1869 and 1879, census production divided by 

 production per acre estimated by Bureau of Crop Estimates. Bureau 

 of Crop Estimates: Estimates for noncensus years; for 1890-98 and 

 1900-8, new estimates of acreage made in 1917. 



Production. — Bureau of the Census: 1849 and later decennial 

 census production years to 1879. Bureau of Crop Estimates: Esti- 

 mates for noncensus years; for census years 1889 and later, census 

 acreage multiplied by yield per acre. 



Production per acre.= — Bureau of Crop Estimates: Estimates by 

 States weighted to compute United States average. 



Farm price per bushel. — Estimates by States by Bureau of Crop 

 Estimates multiplied into State production, and total United States 

 value divided by total United States production, for all years, in- 

 cluding decennial census production years. For date of December 1. 



Total farm value of production. — Farm price per bushel, esti- 

 mated by States by Bureau of Crop Estimates, multiphed into State 

 production; total value of aU States for all years, including decennial 

 census production years. 



Imports. — Gross imports to year beginning July 1, 1910; imports 

 for consumption for later years; Bureau of Foreign and Domestic 

 Commerce. Years begin July 1. 



Supply. — From the formula of production plus gross imports to 

 the year beginning in 1910, and plus imports for consumption for 

 1911 and later years. Carry-over does not enter into the problem for 

 the reason that potatoes are not a carry-over crop. 



Domestic exports, — Goods produced or manufactured in this 

 country from either domestic or imported raw materials; Bureau of 

 Foreign and Domestic Commerce. Years begin July 1 , 



