This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 Excerpt: ... peculiar advantages, but almost any one in which the aperture is not too large or too small will answer the purpose. The most satisfactory type has a trumpet-shaped mouthpiece, a small chamber in which the saliva may accumulate, and a removable tip. In portable sets it is not practicable to provide a blowpipe with a ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 Excerpt: ... peculiar advantages, but almost any one in which the aperture is not too large or too small will answer the purpose. The most satisfactory type has a trumpet-shaped mouthpiece, a small chamber in which the saliva may accumulate, and a removable tip. In portable sets it is not practicable to provide a blowpipe with a trumpet-shaped mouthpiece, however, and this may be dispensed with, although somewhat easier on the lip muscles. Some makes are provided with platinum tips, but this is an unnecessary refinement unless a great deal of work is to be done. A piece of very fine platinum or steel wire is the best implement with which to clean out a clogged tip. Lamps. Tt is desirable, although not absolutely essential, to have two lamps, one for oil and the other for alcohol. The latter is handier than the oil lamp for a few operations which will be mentioned later, but in every case it can be replaced by the oil lamp without material disadvantage. The oil lamp should have a rectangular wick opening about halffan inch long and less than half as wide; the wick opening in the alcohol lamp may be of any shape. Care should be taken (particularly with the oil lamp) not to have the wick so tight as to impede the flow of oil, to trim off charred wick or irregularities as fast as they form, and to keep the wick just high enough not to smoke. The best fuel for the oil lamp is a mixture.composed of two parts of lard oil and one part of kerosene. This solidifies in very cold weather, but thaws out soon after lighting the lamp. Any other flame, such as that from a candle or kerosene lamp, may be used instead of these lamps, and it is often necessary to resort to these in the field, but the lamps and oil described will give the best results in the laboratory. In some places gas...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.