It is believed that the same laws hold good with the gemmiferous vesicles of Zoophytes.    From Wordnik.com.  [The Foundations of the Origin of Species Two Essays written in 1842 and 1844] Reference

But from the centre of the great basin, or rather bowl, which forms the mine, there ran up two wires to the high mound erected on the circumference, on which continually two iron cages were travelling up and down, coming back empty, but going up laden with gemmiferous dirt.    From Wordnik.com.  [An Old Man's Love] Reference