. . "nt shown in FIG. 4; FIG. 10 is a sectional view of a second embodiment of the vessel according to the invention, equipped with its lid; FIG. 11 is a further embodiment of the vessel as seen in FIG. 1; FIGS. 11a and 11b are a perspective and a sectional view respectively of a further element adapted to be associated by screwing with the lids shown in FIGS. 10 and 11; FIG. 12 is a perspective diagra" . .