. Elementary lessons in the physics of agriculture. Agricultural physics. [from old catalog]. 89 which are commingled in varying proportions, giving rise to different varieties according as one or another of these ingredients predominates. The true soil, on account of its more complete aeration and its higher temperature, is the chief laboratory in which the nitrogen compounds for plant food are Fig. 36. Giant's Casble, near Camn Douglass, Wis. From a Photograph. After Chamberlin. Fig. 37. Pillar Rock, Wis. From a Photograph. After Chamberlin. 14:8. Kinds of Surface Soil.—For prac
. Elementary lessons in the physics of agriculture. Agricultural physics. [from old catalog]. 89 which are commingled in varying proportions, giving rise to different varieties according as one or another of these ingredients predominates. The true soil, on account of its more complete aeration and its higher temperature, is the chief laboratory in which the nitrogen compounds for plant food are Fig. 36. Giant's Casble, near Camn Douglass, Wis. From a Photograph. After Chamberlin. Fig. 37. Pillar Rock, Wis. From a Photograph. After Chamberlin. 14:8. Kinds of Surface Soil.—For practical purposes soils are variously classified. When reference is had to the ease or dilBculty of working the soil it is spoken of as 1. Light, or 2. Heavy; but these terms have no si^'nificance as reo-ards actual weights; for a, sandy soil is spoken of as light, and yet it is the heaviest of all soils, bulk for bulk. The greater weight of the sandy soil is due more to the lack of large cav- ities which are found in the clayey soils, than to the higher specific gravity of the soil constituents. It is the greater. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original King, F[ranklin] H[iram], 1848- [from old catalog]. [Madison, Wis. ] State journal printing company
Size: 1889px × 1322px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookcontributorthe, bookdecade1890, bookyear1891
