Sachs definition

Further, it has been found convenient to designate the leaf-bearing stem as a whole by the term shoot, so that the body may, as Sachs suggested, be primarily analysed into shoot and root.

Sachs was the first to formulate the theory that morphological differences are the expression of differences in material composition.

In the 14th century there were schools at Mainz, Strassburg, Frankfort, Wiirzburg, Zurich and Prague; in the 15th at Augsburg and Nuremberg, the last becoming in the following century, under Hans Sachs, the most famous of all.