These writers showed the sympathetic nervous system to consist largely of small, medullated fibers originating from the sympathetic and spinal ganglia.

Discovery of the ganglion cells at the auriculo-ventricular junction, “Bidder’s ganglion”.

Even after the work of Prout and Beaumont, some physiologists thought that the free acid of the gastric juice was lactic acid; Bidder and Schmidt finally proved that normally the gastric juice always contains HCl in excess.