[10] See bulletins 87 (1904), 88 (1904), 108 (1908) and 130 (1911) from the South Dakota Experiment Station, Brookings, S. D.
[11] Wilson, E. H. A Naturalist in Western China 2:27. 1913.
[12] See quotation on page [45].
[13] De Candolle, Origin of Cultivated Plants 207. 1885.
[14] Theophrastus, Book III, Chap. 13.
[15] De Candolle, Alphonse Origin of Cultivated Plants 210. 1885.
[16] Bostock and Riley Nat. History of Pliny 3:322. 1855.
[17] A very good translation of Varro on farming is one by Lloyd Starr-Best, published by G. Bell & Sons, London. 1912.
[18] Athenaeus Dipnosophistæ Book II, Chap. XXXIV-V.
[19] Tertullian Apologeticum Chap. XI.