8 Publications of the S. P. C.K. 
THE ROMANCE OF SCIENCE. 
Post 8vo. With numerous Illustrations. Cloth boards. 
COAL, AND WHAT WE GET FROM IT. 
By Professor R. MELDOLA, F.R.S., F.1I.C. 2s. 6d. 
COLOUR MEASUREMENT AND MIXTURE. 
By Captain W. de W. Asney, C.B., R.E., F.R.S. 2s. 6d. 
DISEASES OF PLANTS. 
By Professor MARSHALL WARD. 2s. 6d. 
OUR SECRET FRIENDS AND FOES. 
Second Edition, revised and enlarged. 
By Percy FARADAY FRANKLAND, PuH.D., F.R.S. 3s. 
SOAP-BUBBLES, AND THE FORCES WHICH MOULD 
THEM. 
By C. V. Boys, A.R.S.M., F:R.S. 2s. 6d, 
SPINNING TOPS. 
By Professor J. Perry, M.E., F.R.S. 2s. 6d. 
TIME AND TIDE: a Romance of the Moon. 
Second Edition, revised. 
By Sir Ropert 8. BALL. 2s. 6d. 
THE MAKING OF FLOWERS. 
By the Rev. Professor G. HENstow, M.A., F.L.S., F.G.8S. 2s. 6d. 
THE STORY OF A TINDER-BOX. 
By the late C. Mrymorr Tipy, M.B., M.S. 2s. 
THE BIRTH AND GROWTH OF WORLDS. 
A Lecture by Professor A. H. Green, M.A., F.R.S. 1s, 
LonDON : NORTHUMBERLAND AVENUE, W.C. 
43, QUEEN VICTOKIA STREET, E.C, 
