1. Pascal, B. (1648): Récit de la grande Expérience de l’Equilibre dans les Liqueurs. Paris: Ch. Saureux. It was the main aim of P.’s experiment to prove a rational theory of the vacuum phenomenon appearing in such instruments, and disguise the earlier idea of the so-called horror vacui
2. Laplace, S.P. (1805): Traité de mécanique céleste, tome 4. Paris: Courcier (Livre X, Chap. IV)
3. Rawer, K. : This Encyclopedia, vol. 49/7, his Sect. 1
4. Nikol’skij, G.M.: Contribution in this volume, p. 309
5. Schmidtke, G.: This Encyclopedia, vol. 49/7