A text book on agriculture
Автор:
Nathan Smith Davis, 54 стр., ISBN:
1154867110
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1848 Excerpt: ...in a tabular form, as follows, viz:--1 Water of absorption, 2 Soluble vegetable matter, 3 Insoluble do. do. 4 Silex & silicates insoluble," 5 Oxide of iron and alumina," 10 do. soda and loss," The question whether the earths and alkalies were principally carbonates or not, will be determined by the amount of effervescence when the muriatic acid is added in the first part of the analysis. The immediate fertility of any soil will depend principally on the quantity of soluble vegetable matter and salts of lime, potash, magnesia, &c., which it contains. Its capability of being made fertile by proper cultivation, will depend, also, on the quantity of insoluble vegetable matter and alumina." An analysis sufficient for most practical purposes, would consist in taking 100 grains of soil,...
Под заказ: |
|
OZON.ru - 2691 руб.
|
Перейти
|
|
|