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Nevertheless, this work is expensive, so in order to keep providing this resource, we have taken steps to prevent abuse by commercial parties, including placing technical restrictions on automated querying. The elevated platform, conforming to the height of the floor of a car, has been found a very great helpj the charge from the retort being run up an incline on to it and there unloaded into cars for outshipment. Where timber and pil- ing are treated in connection with cross-ties, and the quantity justifies, a traveling steam derrick is very useful, especially with long piles and timber.We also ask that you: Make non-commercial use of the files We designed Google Book Search for use by individuals, and we request that you use these files for personal, non-commercial purposes. Where gondola cars are to be had for outgoing ties, the tram loads can be placed in them bodily.
The compact timber is net confined to the oak, hickory, etc., but will be found among the pines. The con- sequence of this is a failure of the oil to reach many of the inteii&brous passages, which are either left empty or are filled with the gelatinous part of the half-matured growth cells in which are to be found the conditions that make putrefaction possible.Maintain attribution The Google "watermark" you see on each file is essential for informing people about this project and helping them find additional materials through Google Book Search. Keep it legal Whatever your use, remember that you are responsible for ensuring that what you are doing is legal. For long timber and piling a car of much the same dimensions, but provided with a strong bolster turning freely on the center of the tram, instead of the two pairs of arms, is used. The principal antiseptic agent used in this process is the chloride of zinc.Do not assume that just because we believe a book is in the public domain for users in the United States, that the work is also in the public domain for users in other countries. The timber or pile is loaded on two cars and, by means of the bolster, the car can turn curves freely in the jrard where curves are unavoidable in works of any exteai Fourteenth — Scales for weighing timber. The chloride can be made on the ground by the combination of hydrochloric acid (muriatic) with common metallic zinc, or the commercial product in the form of a salt furnished in large drums or rolls protected by a covering of thin sheet iron. With acid at i^ cents and zinc at 56-10 cents would be 5 87-100 cents per lb. The fused chloride, 98 per cent pure, is now sold for four cents, so that at the above price for the acid and the spelter it is better to use the fused chloride, at considerable saving in freight as well as in the convenience in its use.In almost all cases the best tmiber is found in the lower part or butt cut of the tree. To secure the best possible results, any timber should have such an amount of seasoning as will free it largely of the green saps existing in the d by Google live tree when cut, or to such extent as may be prac- ticable by exposure to a dry atmosphere for perhaps from 60 to 90 days; more time in a damp, rainy climate than in a dry, sunshiny exposure. In order to remove the sap from wood, it is first nec- essary to vaporize it and then to bring about such external circumstances which shall allow outflow of all gaseous matter from the interior of the wood.All in all, it is true that the better the timber the better the tie. Practically speaking, the determination of condi- tion of timber suitable must be largely a matter of judgment with the further aid of actual results when put through the process. In order to vaporize the sap it is necessary to break down the walls of the cells containing the liquid and semi-liquid substances.