The last page of the manuscript received by Poe appears to have been a photocopy. Rampo seems to know why, but there are still more mysteries surrounding the death of the author.
Poisoning would require the reader 
to have a knowledge of chemistry.
.سيتطلّب التّسميم أن يتملك القارئ معرفةً عن الكيمياء
Da der Leser sich mit Chemikalien nicht
auskennt, wäre Vergiften nicht fair.
El veneno requiere
conocimientos químicos.
El veneno requiere
conocimientos químicos.
L’empoisonnement
fait intervenir des notions
L'avvelenamento richiederebbe delle conoscenze
di chimica da parte del lettore.
O envenenamento exigiria do leitor
conhecimento em química.
Отравление потребует
от читателя познаний в химии.