THE recent observations of Klein & Linser [1932; 1933, 1, 2] on the betaines stachydrine and trigonelline in Stachys palustris and Trigonella Foenum-graecum point to the fact that these substances are intimately connected with protein metabolism. These workers showed that proline and ornithine when injected into the plant caused increases in the concentrations of stachydrine and trigonelline. O...
