A Technological Dictionary of Insurance Chemistry

A Technological Dictionary of Insurance Chemistry

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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. 1899 edition. Excerpt: ...But add water to the woody fibre and the change takes place with greater or loss rapidity, occurring most rapidly in young spongy plants, which admit the air freely, and contain a (good deal of albuminous matter; more slowly in slow growing har woods. Fermentation produces heat, and if the heat is shut in by nonconducting matter, as it is in a haystack, it will, under favourable circumstances, accumulate to such an extent as to cause the hay to take fire; and as fermentation cannot happen unless moisture is present, the vater is therefore blamed for the combustion. This view, however, does not express the whole truth. Carbon combining with oxygen to produce carbonic acid evolves 7900 units of heat (Andrews), this unit being the quantity of heat required to raise one kilogramme of water 1 C. This amount is invariable. Grass, when growing in the field, is covered with numberless microscopical organisms, whether vegetable or animal, matters not for our present purpose; it is suflicient to state that amongst their number are very many which, in the course of their growth, consume oxygen and give off carbonic acid in great quantity, and derive their nutriment from substances of vegetable origin. Such organisms as these are the active agents in every kind of decomposition by fermentation. If hay were stacked immediately it was cut, it would in a very short time become mouldy; its organic structure would be broken up by the feeding upon it of the parasites which prey upon it, and its power of affording nutriment to cattle would entirely disappear. Experience has taught the farmer that these detrimental effects can be entirely stopped by 'curing the hay, ' i.e., by choosing hot weather in which to cut the grass, and then allowing it to remain..show more

Product details

  • Paperback | 190 pages
  • 189 x 246 x 10mm | 349g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123656149X
  • 9781236561497