Note (return) — MEDICAL EXPERT EVIDENCE.

In the case of the so-called neurotic poisons, those which act upon the nervous system, the symptoms are so closely simulated by natural disease that even when they agree in the most absolute manner with those usually developed by any such poison they only render poisoning highly probable, not certain.15 When in any case the symptoms diverge from the typical array, poisoning becomes improbable just in proportion to the amount of divergence.