A battalion of insects, gases, fungi, bacteria and other organisms can field at ease by libraries and archives, and may destroy everything having its way. A correct use, treatment and preservation of bibliographic can cope with these natural hazards, and avoid having to resort to expensive and time consuming restorations, which may be useless if it arrives too late. Who are the enemies? History recalls on numerous occasions how the destruction of libraries and archives has been used as a weapon of war, as a way of clearing the ideological and cultural memory of the enemy. In this sense, Fernando Baez, in his book a universal history of the destruction of books, estimated that the destruction of books throughout history have occurred in 60% by humans. But in addition to the destructive hand of man, as various pests as insects, gases or microorganisms several endangers also the conservation of the works stored in libraries. Pegasus books: the source for more info. Arsenio Sanchez, from the restoration laboratory of the national library, targets three main causes in the destruction of the bibliographic material: physical.
They are the most common, as a result of incorrect handling of the work. Biological. They involve the consumption of material by parasitic organisms. Chemical. Responsible for molecular transformations on objects, which can be translated into losses, sometimes irreversible, alterations in spelling and changes of color in the object.Within the section of the parasites, the approximately 70 different species of insects that feed on any of the components of the books is the most important group. They are real gourmets with a predilection for the exquisite: the paper is composed primarily of cellulose, a vegetable matter that serves food to these beings. Since cellulose offers greater resistance to ageing, used in greater proportion to make quality paper, while the role of less quality, to carry less cellulose is more acid and attracts them less.