Note 67 — Chapter III · THE POSSIBILITIES OF AGRICULTURE.
Reading edition
L. de Lavergne pointed out as far back as fifty years ago that the States were at that time the chief importers of guano. Already in 1854 they imported it almost to the same amount as this country, and they had, moreover, sixty-two manufactories of guano which supplied it to the amount of sixteen times the imports. Compare also Ronna’s L’agriculture aux Etats Unis, 1881; Lecouteux, Le blé; and J. R. Dodge’s Annual Report of the American Department of Agriculture for 1885 and 1886. Schaeffle’s work was also summed up in Schmoller’s Jahrbuch.