 In 1858, Akelaitis published "Słówko o bogach litewskich", a study on the pagan Lithuanian mythology.It was mainly a commentary and corrections of the mythology section in the nine-volume history of Lithuania by Teodor Narbutt.He attributed the Prussian trinity (Potrimpo, Peckols, and Perkūnas) to Lithuanians and analyzed their names from the linguistic point of view.