Note 209 — Chapter VI · NATURAL HISTORY OF CHINA. (continued 2)
Reading edition
From calculations of Humboldt it was estimated that the productiveness of this plant as compared with wheat is as 133 to 1, and as against potatoes, 44 to 1.
Reading edition
From calculations of Humboldt it was estimated that the productiveness of this plant as compared with wheat is as 133 to 1, and as against potatoes, 44 to 1.