as they feel their way up the heights," is the correct way to appreciate science which is destined to rule the world.
In conclusion, the author desires to acknowledge his indebtedness to Dr C. I. Istrati (formerly Ministre de Tlnstruction Publique in the Roumanian Government), Mrs Eugénie Strong, Litt.D., LL.D. (Librarian at Chatsworth to the Duke of Devonshire), Eugène S. Griffiths, H. Follows, F.C.S., Miss E. H. Hopkinson, Miss C. B. Wright, G. Jacquemin, and the late A. C. Maybury, D.Sc., M.R.C.S., for information and help in certain parts of the book.
A. B. GRIFFITHS.
Barcombe Avenue, Streatham Hill,London, S.W.