Practical Agricultural Chemistry
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In our eReader you can find the full English version of the book. Read Practical Agricultural Chemistry Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Practical Agricultural Chemistry
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Shrinkage of Clay on Drying, A small brick of modelling clay is made, of 6 inches in length. Two marks, exactly 5 inches apart, are made on the clay, and the brick weighed. As the brick dries the distance apart of the two marks is measured from time to time, and the loss in weight determined after each measurement. Eventually drying is completed in the oven, a final measurement and weighing made, and curves drawn to show the connection between shrinkage and water-content.
The experiment should ...be repeated with a brick composed of clay mixed with about \ per cent, of quick- lime, and the results compared with those previously obtained.
CHAPTER VIII Mechanical Analysis of Soil The mechanical analysis of a soil consists of its division into various grades of particles according to size. This is a most important point with regard to the physical properties of a soil, especially as a measure of the very fine particles present. The latter give the soil power to retain moisture and resist drought, whilst shrinkage on drying and tenacity when dry are largely dependent on low proportions of humus, sand, and chalk.
What to read after Practical Agricultural Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Samuel James Manson Auld to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Shrinkage of Clay on Drying, A small brick of modelling clay is made, of 6 inches in length. Two marks, exactly 5 inches apart, are made on the clay, and the brick weighed. As the brick dries the distance apart of the two marks is measured from time to time, and the loss in weight determined after each measurement. Eventually drying is completed in the oven, a final measurement and weighing made, and curves drawn to show the connection between shrinkage and water-content.
The experiment should ...be repeated with a brick composed of clay mixed with about \ per cent, of quick- lime, and the results compared with those previously obtained.
CHAPTER VIII Mechanical Analysis of Soil The mechanical analysis of a soil consists of its division into various grades of particles according to size. This is a most important point with regard to the physical properties of a soil, especially as a measure of the very fine particles present. The latter give the soil power to retain moisture and resist drought, whilst shrinkage on drying and tenacity when dry are largely dependent on low proportions of humus, sand, and chalk.
What to read after Practical Agricultural Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Samuel James Manson Auld to read onlineMoreLess
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