John Hopkins Press, 1902
CONTENTS.--Vol. I (1897)--Vol. II (1898)--Vol. III (1899)--Vol. IV (1902)--Vol. V (1905)--Vol. VI (1906)--Vol. VII (1908)--Vol. VIII (1909)--Vol. IX (1911)--Vol. X (1918)--Vol. XI (1922)--Vol. XII (1928)--Vol. XIII (1937)--Vol. 14 (1941)
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amount Appalachian Arundel Avenue Baltimore beds brick burning cent changes character City clay Coastal color Commissioners common Company condition cone considerable consists contains County deposits developed District Division drying effect Elkton extends fact feet feldspar fire fire-clay fluxes formation fusion Geological give grades grains gravel hard heated Highway Hill important improvement inch iron kaolin kiln known land latter less lignite lime limestone localities lower machine manufacture Maryland mass material method miles mineral mixed molding Mountain nature North occur outcrops oxide particles passes Patapsco plain plastic Plate Pleistocene present probably refractory residual river Road rocks sand sandstone sandy sediments shale shore side sometimes stone strata surface Survey temperature tensile strength tests thickness total shrinkage usually varies vitrified ware washed York
Seite 167 - Commissioners, or their certain attorney, their successors and assigns for which payment well and truly to be made, we bind ourselves, our heirs, executors and administrators, jointly and severally, by these presents. Sealed with our seals and dated this day of 1901.
Seite 266 - These sand-wheels are a help, but it is often necessary in addition to keep a man shoveling the sand from the trough. If the sand is finer it is not dropped so quickly and, distributed more evenly along the trough, does not clog it up so fast. The zigzag arrangement of the troughing has been objected to by some as it produces irregularities in the current, causing the sand to bank up in the corners, at the bends and at certain points along the sides of the troughing.
Seite 265 - Clays are washed by one of two methods. With the first method, the clay is thrown into large circular tubs filled with water, in which it is stirred up by revolving arms and the clay lumps thereby disintegrated. By this treatment the fine kaolinite particles, as well as very fine grains of mica, feldspar and quartz, remain suspended in the liquid, while the coarser grains settle in the bottom of the tank. The water with the suspended clay is then drawn off to the settling tanks. A modification of...
Seite 164 - Where no change, from the present grade of those portions of the road not already surfaced with stone, is shown on the profile, the road-bed is to be shaped to the proper cross-section and slight elevations with contiguous depressions removed so as to form an even and smooth surface. The road-bed is to be rolled to a firm, smooth surface before the application of the broken stone.
Seite 253 - If .08 and 1 are bent over and 5 is not affected, the temperature of the kiln is between 1 and 5. The next time numbers 2, 3 and 4 are put in, and 2 and 3 may be fused, but 4 remains unaffected, indicating that the temperature reached the fusing point of 3.
Seite 266 - The troughing has a slight pitch, commonly about one inch in 20 feet, but the amount depends on the kaolin, and whether the contained sand is fine or coarse. If the kaolin is very fine, and settles slowly, the pitch need not be so great, and vice versa. A large quantity of very coarse sand in the kaolin is a nuisance, as it clogs up the log washer and the upper end of the trough more quickly, causing much labor to keep them clean. As it is, considerable sand settles there, and, to keep the trough...
Seite 253 - This consists of two wires, one of platinum and the other of an alloy of 90 per cent platinum and 10 per cent rhodium. These two are fastened together at one end, while the two free ends are carried to a galvanometer which measures the intensity of the current. That portion of the wires which is inserted into the furnace or...
Seite 160 - ... party of the second part. Witnesseth: That in consideration of the sums hereinafter mentioned to be paid by the party of the first part, and penalty expressed in the bond of even date with these presents and annexed hereto, the said party of the second part agrees with said party of the first part...
Seite 260 - Domestic. Porcelain, white earthenware, stoneware, yellow ware and Rockingham ware for table service and for cooking, majolica stoves: polishing brick, bath brick, fire kindlers. "Structural. Brick: common, front, pressed, ornamental, hollow, glazed, adobe; terra cotta; roofing tile- ; glazed and encaustic tile; drain tile; paving brick; chimney flues; chimney pots...