Jasper County Democrat, Volume 2, Number 43, Rensselaer, Jasper County, 27 January 1900 — Tree Sap and the Tides. [ARTICLE]

Tree Sap and the Tides.

A very curious theory lately revived is that the sap of a living tree ebbs and flows in some way In sympathy with the tides of the ocean. This idea comes from Italy, where a grower of vines and other fruit trees, who is also a chemist, has been experimenting in this direction. He says that no tree should be topped or pruned except during the hours of ebb tide.