Catechism of Agricultural Chemistry and Geology |
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Page 19
... sand , clay , and lime . Q. How would you name a soil which contained one or other of these in large quantity ? A. If it contained very much sand , I would call it a sandy soil ; if much clay , a more or less stiff clay soil ; if much ...
... sand , clay , and lime . Q. How would you name a soil which contained one or other of these in large quantity ? A. If it contained very much sand , I would call it a sandy soil ; if much clay , a more or less stiff clay soil ; if much ...
Page 20
... sand or gravel ; heavy lands , such as con- tain much clay . The teacher may illustrate this , by referring to the different kinds of land which occur in the neighbourhood . Q. Which of these two kinds of land is most easily and cheaply ...
... sand or gravel ; heavy lands , such as con- tain much clay . The teacher may illustrate this , by referring to the different kinds of land which occur in the neighbourhood . Q. Which of these two kinds of land is most easily and cheaply ...
Page 22
... sand , clay , and lime ; does it contain no other substances ? A. Yes , it contains small quantities of eight or nine other substances . Q. Name these substances ? A. Potash , soda , magnesia , oxide of iron , oxide of manganese ...
... sand , clay , and lime ; does it contain no other substances ? A. Yes , it contains small quantities of eight or nine other substances . Q. Name these substances ? A. Potash , soda , magnesia , oxide of iron , oxide of manganese ...
Page 26
... sand and clay ) , 648 833 778 Alumina ( in the clay ) , 57 51 91 Lime , 59 18 4 Magnesia , 8 8 1 Oxide of iron , Oxide of manganese , Potash , Soda , chiefly as common salt , 61 30 81 180 trace trace Chlorine , Sulphuric acid , 422 I ...
... sand and clay ) , 648 833 778 Alumina ( in the clay ) , 57 51 91 Lime , 59 18 4 Magnesia , 8 8 1 Oxide of iron , Oxide of manganese , Potash , Soda , chiefly as common salt , 61 30 81 180 trace trace Chlorine , Sulphuric acid , 422 I ...
Page 30
... sand or marl if they were to be had , and turn it over once or twice before using it . Q. Are there any common green vegetables that are ploughed in with advantage ? A. Yes , potatoe - tops dug in , or turnip - tops , when the roots are ...
... sand or marl if they were to be had , and turn it over once or twice before using it . Q. Are there any common green vegetables that are ploughed in with advantage ? A. Yes , potatoe - tops dug in , or turnip - tops , when the roots are ...
Common terms and phrases
AGRICULTURAL CHEMISTRY ammonia animal require applied bone-earth bones burns called carbon and water carbonic acid gas CHEMISTRY AND GEOLOGY Chlorine clover common salt compost consist of carbon contain cow-dung crops cwts draining dung earth EDINBURGH employed fall to powder farm-yard manure farmer fattening fermentation fertile give gluten grass lands grow guano gypsum hydrogen inorganic kind of air large quantity leaves LECTURES ON AGRICULTURAL light lands lighted taper limestone liquid magnesia marl mixed nitrogen oats obtain oil of vitriol organic food organic matter oxide of iron oxygen gas phosphate of lime phosphoric acid plants require potash potatoes produced profit proportion pupils quicklime roots sea-weed shell sand Silica slaked smell soda soil consists sour starch straw subsoil substances sulphuric acid supply taste teacher may exhibit teacher may illustrate teacher will show turnip usually vegetable waste wheat white fumes wood woody fibre
Popular passages
Page 17 - Q. Whence is the organic part of the soil derived? A. It is derived from the roots and stems of decayed plants, and from the dung and remains of animals and insects of various kinds. Q. Does this organic part form a large proportion of the soil ? A. Of peaty soils it forms sometimes three-fourths of the whole weight; but of rich and fertile soils it does not usually form more than from a twentieth to a tenth of the whole weight. Q. Can a soil bear good crops which does not contain a considerable...