xii PREFACE 



the names of those who are principally responsible for the 

 departments into which the subject has been subdivided. 



In Part I. the subject of Life History has been dealt with 

 by Mr Leslie, the Secretary of the Committee, aided by Mr 

 A. H. Evans, Mr E. A. Wilson, and the local correspondents 

 of the Committee. The chapters on Plumage and Food are 

 almost entirely the work of Mr E. A. Wilson, with notes on 

 Insect Food by Mr P. H. Grimshaw, Grit by Dr H. Hammond 

 Smith, and Mr R. H. Rastall, and Water by Mr Leslie. 



In Part II. Mr E. A. Wilson is chiefly responsible for the 

 chapter on Causes of Mortality, and the chapter on " Grouse 

 Disease " is written by him and Mr Leslie. The chapter on 

 Ectoparasites and Endoparasites is written by Dr A. E. Shipley, 

 who also, in conjunction with Dr R. T. Leiper, wrote the chapter 

 on Strongylosis. The chapter on Coccidiosis is the work of 

 Dr H. B. Fantham, and throughout this part frequent reference 

 is made to the chapter on Pathology by Dr Louis Cobbett, and 

 Dr G. S .Graham Smith, which appeared in the original Report. 

 Part III., dealing with the question of Moor Management, 

 Heather-burning, Keepers, Stock and Grouse Driving, are almost 

 entirely the work of Lord Lovat, the Chairman of the Committee, 

 assisted by the Secretary and other members of the Committee. 

 The subject of the Heather Beetle is dealt with by Mr Grimshaw, 

 and Grouse in Captivity by Dr Hammond Smith. 



The Editors have to acknowledge their indebtedness to the 

 Zoological Society of London for their permission to include in 

 edition a selection of the plates representing the plumage 

 of the Grouse which were prepared for the Committee by 

 Mr E. A. Wilson and were first published in the Proceedings 

 of the Society. They have also to thank Mr William Berry 

 and Mr Edward M. Murray for their valuable assistance in 

 preparing this volume for the press. 



A. S. LESLIE. 

 July 1912. 



