AN ELEMENTARY TREATISE
ON
QUATERNIONS

P. G. TAIT, M.A., Sec. R.S.E.,

HONORARY FELLOW OF ST PETER’S COLLEGE, CAMBRIDGE
PROFESSOR OF NATURAL PHILOSOPHY IN THE UNIVERSITY OF EDINBURGH

. . . . . . . τετρακτύν,
παγάν ἀενάου φύσεος ῥιζώματ᾽ ἔχουσαν.

THIRD EDITION, MUCH ENLARGED

CAMBRIDGE
AT THE UNIVERSITY PRESS
1890