LOBACHEVSKII, NICOLAI IVANOVICH. Sposob uveryat'sya v izchezanii bezkonechnykh strok i priblizhat'sya k znacheniyu funktsii ot ves'ma bol'shikh chisel. [The Method of proving the disappearance of infinite Lines and approaching the meaning of Function from rather large Numbers]. Kazan: University Press, 1835. 8vo, original printed wrappers, uncut. FIRST EDITION.