A TREATISE ON PLAQUE 
Dealing with the Historical, Epidemiological, Clinical, 
Therapeutic and Preventive Aspects of the Disease 
by 
W. J. SIMPSON, M.D. Aberd., F.R.C.P. Lond., D.P.H. Gamb. 
Professor of Hygiene, King’s College, London; Lecturer on Tropical Hygiene, London School of 
Tropical Medicine; formerly Health Officer, Calcutta; Medical Adviser to the Government 
of Cape Colony, during the outbreak of Plague in 1901; Commissioner for the Colonial 
Office to inquire into the causes of the continuance of Plague in Hong Kong. 
Royal 8vo. Buckram. Pp. xadv + 466. With 6 maps 
and 34 illustrations. Price 16s. net. 
TICKS 
A Monograph of the Ixodoidea 
By GEORGE H. F. NU^TALL, M.D., Ph.D., Sc.D., F.R.S., CECIL 
WARBURTON, M.A., F.Z.S., W. F. COOPER, B.A., F.Z.S., F.L.S., 
and L. E. ROBINSON, A.R.C.Sc. (London) 
Now Ready. PART I. THE ARGASIDAE. With 116 text 
Figures and 3 Plates. Royal 8vo. 5s. net 
This book will deal with the Classification, Structure and Biology of 
Ticks, the study of the group having occupied the authors for several years. 
Practically all that has been published on the subject has received adequate 
consideration. 
The book will be issued in about four parts, which will be complete in 
themselves but are designed to form a volume of about 500 pages when all 
the parts have been published. Each part will be issued in a stiff paper 
cover and will include a bibliography printed on one side of thin paper so 
that the references can be conveniently cut out and gummed on index cards. 
A complete bibliography, including all the publications cited in each part, 
will conclude the volume. 
CAMBRIDGE UNIVERSITY PRESS, FETTER LANE, LONDON 
C. F. Clay, Manager 
ROYAL COLLEGE OF PHYSICIANS 
OF LONDON 
The Weber=Parkes Prize and Medals 
PRIZE OF 150 GUINEAS AND TWO SILVER MEDALS 
The next award will be made in 1912, and the Adjudicators have selected as 
the subject of the Essay for that occasion— 
The Influence of Mixed and Secondary Infections upon Pulmonary 
Tuberculosis in Man, and the measures preventive and curative 
for dealing with them. 
“ The Essay must be based on original work and observations (experimental 
or other) of the author, and must include a detailed exposition of the methods 
employed and their mode of applicatiou.” 
All Essays, together with any preparations made in illustration of them, must 
be transmitted to the Registrar of the College during the last week of May, 1912, 
in accordance with the Regulations relating thereto, copies of which will be for¬ 
warded from the College on application. 
The Award will be made on some day previous to the 18th October in that 
year. 
J. A. ORMEROD, M.D., Registrar. 
Pall-Mall East, S.W. 
