Scheele also dispatched a letter to Lavoisier on September 30, 1774, that described his discovery of the previously unknown substance, but Lavoisier never acknowledged receiving it (a copy of the letter was found in Scheele's belongings after his death).
Scheele skrev også Lavoisier et brev 30. september 1774, hvori han beskrev som opdagelse af det tidligere ukendte stof, men Lavoisier erkendte aldrig at have modtaget det (et kopi af brevet blev fundet blandt Scheeles ejendele efter hans død).