Who is JB Pratt from Writings, 1902-1910 and what is their importance?

Pratt is the author of a book entitled "What is Pragmatism," in which he asserts that trueness be verifiable and that the pragmatic apparatus for determining truth is insufficient. James asserts that there is no truth without working towards it and that the ascertained truth is only valid for the one who experiences the workings. Pratt appears to value abstract trueness over concrete verifiability.