Shirtclife and Turner [5] carried out more detailed quantitative experiments in which
the morphology of the “salt fingers” cells was investigated by means of optical methods.
It was conrmed that the “salt fingers” have mainly square plane form and the cells
oriented both parallel as well as orthogonal to the beaker walls (a rectangular beaker
was used). Shirtcliffe and Turner noted that the cells rotated very slowly around their
main axes (for each cell, there is a main axis, which is parallel to the z-axis and
passing through the center of the cell).