OBJETS DE VITRINE ET CURIOSITÉ - Didactic board on chemical processes - With the means of production and conservation of gaseous or aeriform bodies (pneumatic chemistry), the most important processes and apparatus for chemical analysis and the furnaces and apparatus used in the arts - Educational board - On wove paper, period colors - Late 19th century - Sheet dimensions: H. 342 x W. 579mm approx. - Condition B: Margins cut off as well as title and caption, soiling, dusting, tears and folds restored.