Structural and Thematic Differences of Manuscripts Repositories and Peculiarities of Funds Protection

In the National Center of Manuscripts the funds are preserved in four repositories: repository of Georgian manuscripts, repository of historical documents and manuscripts in foreign languages, repository of personal archive funds of public figures and repository of photo-microfilms. Each of them is distinguished by thematic and structural diversity and differences in their conservation, which is caused by the variety of texture of the protected funds. Knowledge of all technical parameters and arrangement of
-87-funds is of great importance for preservation of sources. According to what texture is used for the manuscripts: papyrus, parchment, paper, what its form is: the manuscript book or a scroll, a photo or a microfilm, is demanded special temperature, lighting, arrangement, selection ofmaterial for shelves and cases for preservation, observance of distance at international standards between the manuscripts and shelves, also between the shelves and the floor. For conservation of manuscripts it is necessary to take into consideration temperature, humidity, trajectory of manuscripts bent, regime of lighting at internationally accepted standards duing the exhibitions. Many year long observation and rich experience in the restoration laboratory of the National Center of Manuscripts and also the tradition established in different archive funds worldwide has shown that it is desirable the manuscripts on paper, parchment, papyrus should be kept in separate blocks, photo material and microfilms should be arranged in separate blocks too. Each repository should have the so-called buffer zone and a separate room for work on damaged manuscripts. It is also desirable to observe specific arrangement between repositories and the reading hall because the difference in humidity and temperature in repository, corridor and reading hall should not cause structural change of the manuscripts.