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Basic Materials Methods: No matter what its ultimate use, the basic materials methods materials and methods of glass manufacture are, generally speaking, the same. Hollow ware is always blown, pressed, or spun, either by man or machine. All other kinds are usually made by semiautomatic or automatic machines. Most of the machines used in the glassmaking industry have been developed since 1900, and methods of production have been developed and have undergone continuous refining processes leading to numerous new products and uses. The most notable improvements in methods came after World War I.
In the early 20th century, several scholars asserted that the sentence, not the word or the letter, is the basic materials methods unit in language. They recommended that the sentence become the basic materials methods unit in reading instruction.
Several current approaches to reading seem to adhere to this recommendation. However, because the word is the largest linguistic unit that can be identified by the reader, it is difficult to distinguish between the whole word method and sentence methods except by their stated emphases. Two major types of sentence methods are discussed below.
Among the numerous methods of waterproofing, many of which are protected by patent, the greater number relate to a surface application of some composition, usually a thick liquid solution. In this class are paints which serve, in addition to their decorative value, to prevent water from penetrating to the interior of wood, masonry, or other materials. Some of the other important and widely used methods of making materials water resistant or waterproof are those used on Textile fabrics, paper and paperboard, leather, and masonry. |
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