An elementary laboratory study in soils elementarylabora01jeff Year: 1908 Tig. 12. Showiuj; the pans of soil as they apiiear in Expciimcnt XIX. 2. Set all of these i)ans with their contents out in the sunshine. (It will be better if the pans can be set down into the ground so that their rims stand just even with the surface of the ground. The rims of the pans should be but a few inches apart.) o. At any time l^etween 11 a. m. and 2 p. m. take the temperature of these soils one inch below the surface and record. jloTE—It will not be necessary to make a hole for the tliermometers in tliete
An elementary laboratory study in soils elementarylabora01jeff Year: 1908 Tig. 12. Showiuj; the pans of soil as they apiiear in Expciimcnt XIX. 2. Set all of these i)ans with their contents out in the sunshine. (It will be better if the pans can be set down into the ground so that their rims stand just even with the surface of the ground. The rims of the pans should be but a few inches apart.) o. At any time l^etween 11 a. m. and 2 p. m. take the temperature of these soils one inch below the surface and record. jloTE—It will not be necessary to make a hole for the tliermometers in tliete soils. Carefully the bulb of the thermometer to the proper depth. An open frame or gauge like that shown in Fig. 12 will prove helpful. 4. In order that the results may be more reliable it will be better to take the thermometer reatlings just 5 minutes apart, taking two readings from each pan. Take the readings in the following order: 1, 2, 3, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 2, 1. Place your readings in a table like this;
Size: 3740px × 535px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
