...satisfactory elucidations on the subject. The basis of all common soils, as I stated in the Fourth Lecture, are mixtures of the primitive earths and oxide of...necessary to consider the composition of any common siliceous stone. Feldspar, for instance, contains siliceous, aluminous, calcareous earths, fixed alkali,...

...soils is thus given by Sir H. Davy. " It rests," he says, " entirely on chemical doctrines. The basis of all common soils, are mixtures of the primitive...necessary to consider the composition of any common siliceous stone. Feldspar, for instance, contains siliceous, aluminous, calcareous earths, fixed alkali,...

...theory nf burning sous is thus given by Sir H. Davy. It rests, he says, entirely on chemical doctrines. The bases of all common soils are mixtures of the...necessary to consider the composition of any common siliceous stone. Feldspar, for instance, contains siliceous, aluminous, calcareous earths, fixed alkali,...

...theory of burning sous is thus given by Sir H. Davy. It rests, he says, entirely on chemical doctrines. The bases of all common soils are mixtures of the...consider the composition of any common silicious stone. Feldspar, for instance, contains ьШслои<ц aluminous, and calcareous earths, fixed alkali, and...

...theory of burning soils is thus given by Sir H. Davy. It rests, he says, entirely on chemical doctrines. The bases of all common soils are mixtures of the...necessary to consider the composition of any common siliceous stone. Feldspar, for instance, contains siliceous, aluminous, and calcareous earths, fixed...

...Davy thus explains the theory of burning soils. He says, " it rests entirely on chemical doctrines. The bases of all common soils are mixtures of the...these earths have a certain degree of attraction for ench other. To regard this attraction properly, consider the composition of any common silicious stone....

...satisfactory elucidations on the subject. The bases of all common soils, as I stated in the Fourth Lecture, are mixtures of the primitive earths and oxide of...necessary to consider the composition of any common siliceous stone. Feldspar, for instance, contains siliceous, aluminous, calcareous earths, fixed alkali,...

...Davy thus explains the theory of burning soils. He says, " it rests entirely on chemieHl doctrines. The bases of all common soils are mixtures of the...attraction for each other. To regard this attraction properly, consider the composition of any common silicious stone. Feldspar, for instance, contains...

...joining the latter river at Hajeepoor. General Properties of the soil. — Sir HUMPHREY DAVY says, that " the bases of all common soils are mixtures of the primitive earths and oxide of iron," and that " soils in all cases consist of a mixture of finely divided earthy matters, with vegetable or...

...clay, marl, or vegetable matter. By burning foils considerable chemical changes can be brought about. " The . bases of all common soils are mixtures of the...have a certain degree of attraction for each other." " When clay or tenacious soils are burnt, they are brought nearer to a state analogous to that of sand....