THE 
JOURNAL OF HYGIENE 
PLAQUE SUPPLEMENT 1 
SIXTH REPOET ON PLAGUE 
INVESTIGATIONS IN INDIA 
ISSUED BY THE ADVISORY COMMITTEE APPOINTED BY THE SECRETARY 
OF STATE FOR INDIA, THE ROYAL SOCIETY, AND THE LISTER 
INSTITUTE. 
206 pp. with 14 plates, 3 maps, 6 charts, etc. Price 7s. net 
CONTENTS 
XL. Major George Lamb, M.D. Glasg., I.M.S. With portrait 
XLI. Epitome of some recent observations on rat-fleas 
XLII. Preliminary observations on the protective and curative value for rats of the serum of 
a horse immunised with a toxic nucleo-protein extracted from the plague bacillus 
XLIII. Second report on investigations into plague vaccines 
XLIV. Statistical investigation of plague in the Punjab. Second report: On the connection 
between proximity to railways and frequency of epidemics 
XLV. Statistical investigation of plague in the Punjab. Third report: On some of the 
factors which influence the prevalence of plague 
XLVI. Observations on plague in Eastern Bengal and Assam 
XLVII. Observations on the breeding of Mus rattus in captivity 
CAMBRIDGE UNIVERSITY PRESS, FETTER LANE, LONDON 
C, F. CLAY, Manager 
THE 
JOURNAL OF ECONOMIC 
BIOLOGY 
Edited by 
WALTER E. COLLINGE, M.Sc., F.L.S., F.E.S. 
with the co-operation of 
Prof. A. H. REGINALD DULLER, D.Sc., Ph.D. ; 
Prof. GEO. H. CARPENTER, B.Sc., M.R.I.A.; 
Prof. PERCY GROOM, M.A. (Cantab. & Oxon.), D.Sc., F.L.S. ; 
Prof. ROBERT NEWSTEAD, M.Sc., A.L.S.; 
and A. E. SHIPLEY, M.A., Hon. D.Sc., F.R.S. 
Contains articles treating of all branches of Economic Biology, Entomology, 
Parasitology, Mycology, etc. Fully illustrated by lithographic plates and text 
figures. A few sets of Vols. 1-6 still remain, price 21s. each. Volume 7, now in 
course of publication, will consist of four parts, price 16s. 
All editorial communications should be addressed to Walter E. Collinge, 
59, Newhall Street, Birmingham, and all subscriptions to 
London: DULAU & CO., Ltd., 37, Soho Square, W. 
Berlin: R. FRIEDLANDER & SOHN. 
