 | University of California (1868-1952). College of Agriculture - 1879 - 234 halaman
...soil, down to the depth of three feet at least, since the question of drainage, resistance to drouth, etc., will depend essentially upon the nature of the substratum. But in ordinary cases, ten or twelve inches of subsoil will be sufficient for the purposes of examination in the laboratory.... | |
 | Society for the Promotion of Agricultural Science (U.S.) - 1890 - 698 halaman
...It is always necessary to know what constitutes the foundation of a soil, down to the depth of three feet at least, since the question of drainage, resistance...the nature of the substratum. But in ordinary cases, ten or twelve inches of subsoil will be sufficient for the purposes of examination in the Laboratory.... | |
 | New Jersey Agricultural Experiment Stations - 1888 - 828 halaman
...desirable to know what constitutes the foundation of the soil down to a depth • f at least three feet, since the question of drainage, resistance to drought etc , will depend essentially upon the sub-stratum. But in ordinary cases ten or twelve inches of sub-soil will be sufficient for the purposes... | |
 | 1889 - 92 halaman
...what constitutes the foundation of a soil down to a depth of three feet at least, since the questions of drainage, resistance to drought, etc., will depend...the nature of the substratum ; but in ordinary cases ten or twelve inches of subsoil will be sufficient for the purposes of examination in the laboratory.... | |
 | Geological Survey of Texas - 1889 - 84 halaman
...what constitutes the foundation of a soil down to a depth of three feet at least, since the questions of drainage, resistance to drought, etc., will depend...the nature of the substratum ; but in ordinary cases ten or twelve inches of subsoil will be sufficient for the purposes of examination in the laboratory.... | |
 | Felix Wahnschaffe - 1891 - 218 halaman
...soil down to the depth of three feet at least, since the question of drainage; resistance to draught, etc., will depend essentially upon the nature of the substratum. But in ordinary cases ten or twelve inches of subsoil will be sufficient for the purpose of examination in the laboratory.... | |
 | United States. Bureau of Chemistry - 1892 - 790 halaman
...The depth down to which the last should be taken will depend on circumstances. It is always necessary to know what constitutes the foundation of a soil,...upon the nature of the substratum. But in ordinary eases 10 or 12 inches of subsoil will be sufficient for the purposes of examination in the laboratory.... | |
 | United States. Bureau of Chemistry - 1894 - 1004 halaman
...depend on circumstances. It is always necessary to know what constitutes the foundation of a soil, to the depth of 3 feet at least, since the question...examination in the laboratory. The specimen should be obtained in other respects precisely like that of the surface soil, while that of the material underlying... | |
 | Association of Official Agricultural Chemists (U.S.) - 1899 - 96 halaman
...depend on circumstances. It is always necessary to know what constitutes the foundation of a soil, to the depth of 3 feet at least, since the question...essentially upon the nature of the substratum. But iii ordinary cases 10 or 12 inches of subsoil will be sufficient for the purposes of examination in... | |
 | United States. Bureau of Chemistry - 1906 - 1020 halaman
...will depend on circumstances. It is always nocossary to know what constitutes the foundation of a soil to the depth of 3 feet at least, since the question...the purposes of examination in the laboratory. The sample should be obtained In other respects precisely like that of the surface soil, while that of... | |
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The specimen should be taken in other respects precisely like that of the surface soil, while that of the material underlying this "subsoil... 
