PREFACE vii 
M.Inst.C.E., Cardiff; Mr. Frank Howarth, M.Inst.C.E., 
Plymouth ; Mr. S. Chapman, M.Inst.C.E., Torquay ; Mr. 
J. H. H. Swiney, M.Inst.C.E., Belfast ; and Dr. P. C. Cowan, 
Local Government Board, Dublin, contributed valuable 
information and aided my researches in various ways. 
Prof. Percy F. Kendall, Leeds University; Mr. W. B. 
Crump, M.A., Rastrick; Mr. Frank Elgee, Middlesbrough ; 
Mr. G. P. Gordon, Lecturer in Forestry, West of Scotland 
Agricultural College, Glasgow; and Mr. James Whitton, 
Superintendent of Parks, Glasgow, furnished me with plans, 
photographs, and lantern slides, which proved very useful 
in the lectures given before the Chadwick Society and in 
the preparation of this book. 
The plates illustrating the work have been borrowed 
from various sources, and acknowledgements and thanks 
are now tendered for the loan of blocks to Mr. Edward 
Arnold, Frontispiece, from A. C. Forbes, Development of 
British Forestry, and Fig. 6, from Cohen and Ruston, 
Smoke; to Mr. John Murray, Figs. 14 and 16, from E. P. 
Stebbing, British Forestry; to the Council of the Royal 
Irish Academy, Fig. 13, from Pethybridge and Praeger, 
Vegetation South of Dublin; to Mr. P. E. Martineau, 
Secretary, Midland Reafforesting Association, Figs. 7, 8, 
9, from Annual Reports; to Superintendent, Linford Sana- 
torium, Fig. 1, from Booklet; to Town Clerk, Bournemouth, 
Fig. 2, from Handbook ; to Mr. W. H. Morter, Superin- 
tendent, Parks of Birmingham, Fig. 4, from Handbook ; to 
Mr. Robert Anderson, Printer, Glasgow, Fig. 5, from Municipal 
Glasgow; to Mr. R. Galloway, Secretary, Figs. 15, 17, 22, 
26, 31, 32, 33, from Transactions of the Royal Scottish 
Arboricultural Society; to Prof. W. Somerville, Editor, Figs. 
12, 24, 25, 27, from Quarterly Journal of Forestry ; to 
Editor, Gardeners’ Chronicle, Figs. 21, 28, 29, 30; to 
