TAILIEUCHUNG - WASTE OF MANURE AND ABSORBENTS

The loss of manure is a subject which demands most serious attention. Until within a few years, little was known about the true character of manures, and consequently, of the importance of protecting them against loss. The first causes of waste are evaporation and leaching. EVAPORATION. Name a solid body which evaporates. What takes place when a dead animal is exposed to the atmosphere for a sufficient time? What often assist the evaporation of solids? Evaporation is the changing of a solid or liquid body to a vapory form. Thus common smelling salts, a solid, if left exposed, passes into the atmosphere. | WASTE OF MANURE AND ABSORBENTS What are the first causes of loss of manure What is evaporation The loss of manure is a subject which demands most serious attention. Until within a few years little was known about the true character of manures and consequently of the importance of protecting them against loss. The first causes of waste are evaporation and leaching. EVAPORATION. Name a solid body which evaporates. What takes place when a dead animal is exposed to the atmosphere for a sufficient time What often assist the evaporation of solids Evaporation is the changing of a solid or liquid body to a vapory form. Thus common smelling salts a solid if left exposed passes into the atmosphere in Pg 102 the form of a gas or vapor. Water a liquid evaporates and becomes a vapor in the atmosphere. This is the case with very many substances and in organic nature both solid and liquid they are liable to assume a gaseous form and become mixed with the atmosphere. They are not destroyed but are merely changed in form. As an instance of this action suppose an animal to die and to decay on the surface of the earth. After a time the flesh will entirely disappear but is not lost. It no longer exists as the flesh of an animal but its carbon hydrogen oxygen and nitrogen still exist in the air. They have been liberated from the attractions which held them together and have passed away but as we already know from what has been said in a former section they are ready to be again taken up by plants and pressed into the service of life. The evaporation of liquids may take place without the aid of any thing but heat still in the case of solids it is often assisted by decay and combustion which break up the bonds that hold the constituents of bodies together and thus enable them to return to the atmosphere from which they were originally derived. What is the cause of odor When we perceive an odor what is taking place Why do manures give off offensive odors How may we detect ammonia escaping

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