See also:rock . The word is thus applied to the small fragments scattered in the ground or on roads, to the
See also:water-worn pebbles of the
See also:shore or
See also:river beds, and to the hewn, dressed or shaped rock used as a
See also:building material, with which this article deals . A qualifying word generally accompanies "
See also:stone " when the
See also:term is applied to pieces of rock cut to a particular
See also:size and shape and used for a specific purpose, e.g . "
See also:mill-stone," "
See also:hearth-stone," "
See also:grave-stone," &c . The term " precious stone " is used of those minerals which, from their beauty of
See also:colour, &c., their rarity, and some-times their hardness, are valued for their suitability for ornaments (see GEMs) . The word is also often applied to many
See also:objects resembling a stone or pebble, such as the hard kernel of certain fruits, as of the
See also:plum, peach, &c., or the calculi or
See also:con- Also called
See also:Janssen (
See also:Diet . Nat . Biog.),
See also:Jansen and Janson . Possibly he was the
See also:brother of the
See also:Gerard (Geraert) Jansen or
See also:John-son, of
See also:Southwark, who in 1616 executed the bust of
See also:Shakespeare in Stratford
See also:church; but it is uncertain whether the latter was identical with, or the son of, the Dutch
See also:tomb-maker Gerard Jansen described in
See also:Sir W .
See also:Diary as having, in 1593, lived for twenty-six years in England and as the
See also:father of five sons.cretions sometimes formed in the
See also:gall or urinary bladder or the kidneys (see BLADDER DISEASES and
See also:KIDNEY DISEASES) . The " stone " has been a
See also:common measure of
See also:weight in
See also:Europe . In Germany the " Stein" was of 20 to 22 lb .
See also:system of weights the "legal" stone, or "
See also:horse-man's " weight is of 14 lb
See also:avoirdupois; in weighing wool it was also of 14 lb, but is now usually 16 lb . The " customary " stone for
See also:fish or
See also:meat is of 8 lb . Building-stone.—In selecting a stone for building purposes many important points have to be considered . The stone must be strong enough to bear the load placed, upon it, it must be durable and
See also:weather well in the atmosphere of the
See also:district, and its colour and appearance need to be studied . It must further be ascertained whether a sufficient supply is available, and the price also must be taken into account; some difficulty is often experienced in obtaining a suitable stone at a moderate cost, and considerations of expense frequently have more to do with the choice of a stone than the architect would wish . Where there is
See also:risk of
See also:fire, as is often the case in business and factory premises, it is necessary to select a stone able to stand the effect of a
See also:heat without damage . Great experience of the strength of stones and, of their behaviour in different situations is desirable; but even when this knowledge is given and the greatest care is combined with it, some point may be overlooked . For example, the stone facing of the Houses of Parliament at
See also:Westminster was chosen on the recommendation of a
See also:committee composed of men of eminent scientific and technical skill; yet it has not weathered well because it is not constituted to resist the destroying effects of the
See also:London atmosphere . The
See also:prime factor in the choice of a building stone should be the
See also:climate to which the material has to be exposed . Stone that in the pure
See also:country air has proved extremely durable Constttumay quickly decay in an impure city atmosphere, or when subjected to the strong
See also:salt winds from the sea. tlOD• Extremes of temperature, too, are, generally speaking, prejudicial to the
See also:life of stone, the alternations of heat and
See also:cold setting up movements in the substances of the stone, which, though slight, will in many cases hasten its disintegration . There are few materials which more quickly decay and fail than stone placed under unsuitable conditions . An analysis, made by E .
See also:Clayton, of a sample of incrustation found on the
See also:Portland stone
See also:masonry of St Paul's
See also:Cathedral, London, gave the following result Weight per cent . Water . (lost at loo°) .
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