found in Laplace's and Poisson's; however, in my view, du Bois-Reymond brought them out in an independent way. Questions concerning thermal capillarity, Du Bois-Reymond leads to four main problems. The solution to the last of them, which relates to an equally floating body, is based on the erroneous assumption and led the author to incorrect conclusions about the relationship that exists between the entire volume of floating body and that part of it that is wetted liquid[1].
Meanwhile, how the theory founded by Laplace, in the works of the mentioned scientists and some others, reached significant development and well-known completeness, the method proposed by Young, developed much more slowly and for some time found only few followers.
In 1845 and 1846 Hagen[2] in a number of articles again examined from this point of view both the general theory of capillarity and its particular questions. Since then, many physicists (Plateau, Lamarle, Van der Mensbrugghe and others) have used the hypothesis of surface cohesion of liquids when considering capillary phenomena. The number of such followers of Young has been constantly increasing in recent times. Flipping through the first books of the magazine Almeida, dedicated to physics, we find several notes concerning the theory of capillarity and a whole polemic between followers of both directions. At first Moutier[3] placed a note in order to show the advantage Laplace theory. Renewing the reproach that
