Catechism of Agricultural Chemistry and Geology |
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Page 2
... consist ? A. The organic part of plants consists of four elements , known by the names of carbon , hydrogen , oxygen , and nitrogen . Q. What is carbon ? A. Carbon is a solid substance , usually of a black colour , which has no taste or ...
... consist ? A. The organic part of plants consists of four elements , known by the names of carbon , hydrogen , oxygen , and nitrogen . Q. What is carbon ? A. Carbon is a solid substance , usually of a black colour , which has no taste or ...
Page 1
... A. All vegetable substances consist of two parts , one which burns away in the fire , called the organic part , and one which does not burn away , called the inorganic part . A Fig . 1 . Here the teacher will burn a CATECHISM ...
... A. All vegetable substances consist of two parts , one which burns away in the fire , called the organic part , and one which does not burn away , called the inorganic part . A Fig . 1 . Here the teacher will burn a CATECHISM ...
Page 2
... consist ? A. The organic part of plants consists of four ele- ments , known by the names of carbon , hydrogen , oxygen , and nitrogen . Q. What is carbon ? A. Carbon is a solid substance , usually of a black colour , which has no taste ...
... consist ? A. The organic part of plants consists of four ele- ments , known by the names of carbon , hydrogen , oxygen , and nitrogen . Q. What is carbon ? A. Carbon is a solid substance , usually of a black colour , which has no taste ...
Page 5
... consist ? A. The inorganic part of plants contains from eight to ten different substances , namely , potash , soda , lime , magnesia , oxide of iron , silica , chlorine , sul- phuric acid , or oil of vitriol , and phosphoric acid . Here ...
... consist ? A. The inorganic part of plants contains from eight to ten different substances , namely , potash , soda , lime , magnesia , oxide of iron , silica , chlorine , sul- phuric acid , or oil of vitriol , and phosphoric acid . Here ...
Page 7
... consists of the metal iron , and of the gas oxygen which the iron has attracted from the air , and hence it is called an oxide of iron . The teacher will explain more fully , that , when me- tals combine with oxygen , they form new ...
... consists of the metal iron , and of the gas oxygen which the iron has attracted from the air , and hence it is called an oxide of iron . The teacher will explain more fully , that , when me- tals combine with oxygen , they form new ...
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...