11 
Introduction 
worms, especially those which produce filariasis, ankylostomiasis, and 
various intestinal diseases, have given a great stimulus to the study of 
the entozoa. 
Papers on the subjects we have mentioned are now scattered in 
journals of widely different character, into some of which they are but 
grudgingly admitted. We trust that Parasitology will fulfil the pur¬ 
pose the editors have in view, of encouraging the study of parasitology, 
especially in relation to disease, by providing a means for the publication 
of papers relating to pathogenic and disease-transmitting parasites. 
It is therefore hoped that this publication will appeal not only to 
medical men at home and abroad, but to veterinarians, zoologists and 
agriculturalists. 
A paper by Dr K. Jordan and the Hon. N. C. Rothschild on the 
structure and classification of a group of fleas, some of whose members 
are now known to play an important part in the spread of plague, consti¬ 
tutes the first number of Parasitology. 
The following papers have been promised for the succeeding 
numbers:—“Further studies on the anatomy and life-history of 
Anopheles maculipennis,” by A. D. Imms. “ The structure and biology 
of the Tick ( Haemaphysalis punctata),” by G. H. F. Nuttall, F.R.S., 
W. F. Cooper, B.A., and L. E. Robinson. “ On two new species of 
Human Entozoa,” by R. T. Leiper, M.B. (London School of Tropical 
Medicine). “ On the relation of Entozoa to intestinal disease in verte¬ 
brates,” by A. E. Shipley, F.R.S. “Studies on Spirochaeta Duttoni,” 
by G. H. F. Nuttall, F.R.S. “ Comparative studies on the Piroplasmata,” 
by G. H. F. Nuttall, F.R.S., and G. S. Graham-Smith. 
Parasitology, though a supplement to the Journal of Hygiene, will 
be issued in the form of a separate yearly volume of four to five 
hundred pages. The parts will be issued when sufficient material has 
accumulated. Subscribers to the Journal of Hygiene can obtain 
Parasitology at an annual subscription of 15s., other subscribers at 
21s. a year. 
G. H. F. N. 
A. E. S. 
