I’ve recently posted about Moritz Schreber’s Geradehalter. Afterwards I noticed that there is another Gradehalter that is attributed to Schreber in various places, notably Wikipedia. As depcited above, this Geradehalter ist somewhat more involved, not just a barrier screwed to the table but straps and loops to be put around the child’s head and body (Hennig and Schreber 1882, 155).

This version of the Gradehalter is not actually Schrebers design, rather it’s designed by Carl Hennig who edited the second and third revised editions of Schreber’s Kallipädie and used the opportunity to replace some of Schreber’s contraptions with his own.

Figure 1: Hennig's Geradehalter (Hennig and Schreber 1882, 156)

I don’t know where the confusion started, William Niederland attributed the second Geradehalter to Hennig but didn’t provide a source for either the illustrations he included, nor Hennig as the designer (Niederland 1959, 155). It seems hardly any of the later authors bothered to check the primary sources.

Figure 2: Hennig's version of the Schulterband (Hennig and Schreber 1882, 151)

References⌗

Hennig, Carl, and Daniel Gottlob Moritz Schreber. 1882. Das Buch der Erziehung an Leib und Seele: für Eltern, Erzieher und Lehrer. Dritte, stark vermehrte Auflage. Leipzig: Friedrich Fleischer. http://archive.org/details/b28081158.
Niederland, William G. 1959. “Schreber: Father and Son.” The Psychoanalytic Quarterly 28 (2): 151–69. https://doi.org/10.1080/21674086.1959.11926132.