This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ... bone black and bone ash are also used after having served other purposes first. The more finely ground the bones, the more quickly they are available. Why? The steaming process also facilitates the availability of bones, inasmuch as it frees them from fat and nitrogenous matter and produces a better ...
Read More
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ... bone black and bone ash are also used after having served other purposes first. The more finely ground the bones, the more quickly they are available. Why? The steaming process also facilitates the availability of bones, inasmuch as it frees them from fat and nitrogenous matter and produces a better mechanical condition. The form of phosphorus in all these materials is the same, namely tricalcium phosphate Ca3(PO4)2-All these carriers of phosphorus are slow acting and should be used for the permanent upbuilding of the soil fertility rather than as an immediate source of phosphorus. Raw bones contain 9.5% phosphorus and 4% nitrogen; steamed bones contain 12% to 15% phosphorus and V/2% nitrogen; and bone tankage contains 3% to 4% phosphorus. Mineral Phosphates. There are a number of natural deposits of mineral phosphates in different portions of the world, some of the most important of which are in North America. The form in which the phosphorus exists in these deposits is tricalcium phosphate, but a variety of substances is associated with it. South Carolina phosphate contains 11 to 12% phosphorus with but a very small amount of iron and alumina. Florida phosphates occur in the forms of soft phosphate, pebble phosphate and boulder phosphate. Soft phosphate contains 8 to 13% phosphorus. It is more easily ground than most of these rocks and is often applied to the land without being converted into a superphosphate. Tennessee phosphate contains from 13 to 15% phosphorus. Basic slag, phosphate slag or Thomas phosphate is a by-product in the manufacture of steel from pig iron rich in phosphorus. The phosphorus is present in the form of tetracalcium phosphate, (CaO)4P2Os. It also contains calcium, magnesium, aluminium, manganese, silicon, and...
Read Less
Add this copy of Chemistry of the Farm and Home to cart. $58.91, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2010 by Nabu Press.
Add this copy of Chemistry of the Farm and Home to cart. $100.00, very good condition, Sold by Thomas Dorn, ABAA rated 5.0 out of 5 stars, ships from Canton, GA, UNITED STATES, published 1920 by St. Paul: Webb Publishing Co., 1920..
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
Very Good. First printing. Small 8vo. 434 pp. + [2] pp. ads. Illustrated in B & W. Original illustrated red cloth binding. Spine dulled with light edge wear, owners' names front pastedown and free endpaper, else tight, very good plus. Scarce in the first edition.
