The Foundations of Science By W.C.D.Whetham, F.R.S.
*2.

Embryology--The Beginnings of Life By Prof.Gerald Leighton, M.D.
3.

Biology--The Science of Life By Prof.W.D.Henderson, M.A.
*4.

Zoology: The Study of Animal Life By Prof.E.W.MacBride, F.R.S.
*5.

Botany; The Modern Study of Plants By M.C.Stopes, D.Sc., Ph.