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The Preservation and Treatment of Films in School Cinematography
by Dr. W. Rahts
(From the German)
The growing desire of all countries to make class teaching more vivid and actual first led to the introduction in schools of fixed projection by lanternslide or short film strips and later to the use of cinema film. The triumphant progress of commercial cinematography quickly prompted the idea of utilising this scientific invention for teaching purposes — all too quickly, indeed, for had the schools awaited the development of film technique, they would probably have solved the problem otherwise than by borrowing from the commercial cinema the 35 mm. celluloid film. For it is to be assumed that the schools do normally employ this 35 mm. celluloid film rather than the 35 mm. acetyl or safety film or the 16 mm. film, which under agreements concluded between raw film manufacturers is
(Editorial Note). The question of the treatment and safe-keeping of films is very relevant to the problem of cinematographic teaching. It is indeed one of its essential aspects and on this account the Institute decided to approach Dr. W. Rahts, a recognized expert, with the request that he would furnish the International Review of Educational* Cinematography with a detailed account of the technical side of the matter.
As we all know, the systematic introduction of the cinema into schools as an aid to teaching is hindered by the heavy cost involved. It is not, however, the installation expenses alone that make the responsible authorities hesitate. The risks of fire, the need of preserving ana replacing material both delicate and costly combel them to anticipate permanent and comparatively heavy expenditure.
We were of opinion that these aspects of the question needed to be explained. The creation of school-film collections does not entail undue initial expense {we are referring to the safe-keeping and not the purchase of films); films are quite easy to keep and, if the purchase cost is spread over several annual school budgets, the financial problem of establishing a collection is one that should be solved without much difficulty. Moreover, the risks of fire can now be excluded, either because teaching-films of to-day are made on a non-inflammable base or because by taking certain precautions celluloid films can be rendered almost entirely safe.
Dr. Rahts deals with the matter point by point with the knowledge and
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