to challenge the accuracy of a statement or of a quotation

Whereas in classical physics mass and energy are distinct concepts, on relativistic scales, they become indistiguishable and are replaced by mass-energy.

Rev. Joseph Pelechovyck, pastor of Ukro-Russian Church, presided, and Humphrey Kowalsky of New York, secretary of the information bureau of the Ukrainian national committee, spoke in English and Ukrainian.

Some leaves have been lost or misgathered; the MS., however, affords no indication for deciding which of these suppositions is correct.