This section is from the book "A Dictionary Of Modern Gardening", by George William Johnson, David Landreth. Also available from Amazon: The Winter Harvest Handbook: Year Round Vegetable Production Using Deep Organic Techniques and Unheated Greenhouses.
Loam is a very indefinite term: almost every cultivator of the soil associates with it a different explanation. In some parts of England clay is so called, and in others it is employed to designate brick-earth ! As usually employed, it really is only synonymous with the word soil; for it has to be qualified by the terms turfy, sandy, clayey, and chalky, just as turf, sand, clay, or chalk predominate. Then, what is hazel loam 1 Why, no other than a rich friable soil, having a dark brown or hazel colour, owing to the predominance of decaying vegetable matters. Before long, we hope to see determined how much silica is to be understood as existing in a loam termed sandy, and how mnch alumina in that which is correctly termed clayey.
The following is the analysis of a hazel loam: -
Silica and quartz sand . . | 95.0 |
Alumina | 30 |
Vegetable matters . . . | 5.0 |
Oxide of iron..... | 1.5 |
Lime, soda, oxide of manganese | 0.25 |
Gypsum, phosphate of lime, and common salt | 0.25 |
Such a loam is useful to render light soils more retentive, and heavy soils more porous; but, for this purpose, must be applied at the rate of 100 tons per acre.
Maiden loam is soil taken from the surface of a pasture.
 
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