The second to last paragraph on page 420 sums it up: > My investigations now lead me to confirm Syrski's data almost throughout. However, the histological exam

The second to last paragraph on page 420 sums it up: > My investigations now lead me to confirm Syrski's data almost throughout. However, the histological examination of the organ does not make it possible for me to agree decisively with the opinion that this is the testis of the eel or to refute it with certain reasons.