xx INTRODUCTION 



Morphology and Life History of Eimeria ( Coccidium) avium : a Sporozocin causing 

 a fatal disease among young Grouse ; (2) Observations on the Parasitic Protozoa 

 of the Red Grouse (Layopus scoticus) ; (3) Experimental studies on Avian 

 Coccidiosis, especially in relation to young Grouse, Fowls and Pigeons ; (4) Observa- 

 tions on the Blood of Grouse. By the courtesy of the Zoological Society of London 

 these articles are reprinted in the present Report. 



C. G. SELIGMANN, M.B., then Pathologist to the Zoological Society of London, 

 was appointed in 1906 to investigate the bacteriology of "Grouse Disease." He 

 worked for the Committee till the end of 1907, when he left for Ceylon on a 

 scientific expedition. The Committee is indebted to him for the discovery that 

 the bacterial characters observed by Professor Klein as symptomatic of "Grouse 

 Disease " were not in fact the pathological accompaniment of the mortality in 

 Grouse as observed by the Committee. After Dr Seligmann went abroad his 

 observations on this point were continued and confirmed by Dr Cobbett and Dr 

 Graham Smith. 



L. COBBETT, M.D., F.R.C.S., University Lecturer in Pathology, Cambridge, 

 and G. S. GRAHAM-SMITH, M.D., University Lecturer in Hygiene, Cambridge, 

 consented in 1909 to continue the work where Dr Seligmann had left off. They 

 made an exhaustive investigation of the general pathology of "Grouse Disease" 

 in all its forms, and the relation of the Bacillus coli of Professor Klein's 

 " Grouse Disease " to the various pathological lesions which had come under the 

 observation of the Committee. The results of their investigations were published 

 in the Journal of Hyyiene in June 1910, and, by the courtesy of Professor 

 Nuttall, the Editor of that Journal, arc reprinted in the present Report. 



L. W. SAM BON, M.D., gave considerable assistance to Dr Seligmann during 

 the spring of 1907, and discovered a new leucocytozoon in the blood (L. Lovati). 



H. HAMMOND SMITH, M.B., Pathologist to the Field newspaper, has assisted 

 the Committee both in the field and in the laboratory since the Inquiry was 

 commenced. He established and organised the Observation Area at Frimley 

 iu Surrey, and gave great assistance to the Committee in connection with the 

 conduct of experiments at this Observation Area. He also assisted in the study 

 of the question of the grits found in the gizzards of the Grouse and other game 

 birds, and gave great help to the Committee in connection with the conduct 

 of experiments at the Observation Area. 



