TABLE OF CONTENTS 



VOLUME I. 



CHAI'TEK 



Introduction. By LORD LOVAT xi 



PART I. THE NORMAL GROUSE. 



I. The Systematic Position of the Grouse. By A. H. EVANS .... 1 

 II. The Life History of the Grouse. By A. S. LESLIE 5 



III. The Changes of Plumage in the Red Grouse in Health and in Disease. 



By EDWARD A. WILSON 29 



PART I. PLUMAGE CHANGES IN THE COCK. 

 PART II. PLUMAGE CHANGES IN THE HEN. 

 PART III. LOCAL VARIATIONS IN THE PLUMAGE OF THE GROUSE. 



IV. Food of the Red Grouse 67 



PART I. OBSERVATIONS ON THE FOOD OF GROUSE, based on an examination of crop 

 contents. By EDWARD A. WILSON. 



PART II. THE INSECT FOOD OF GROUSE CHICKS, based on an examination of crops 

 and gizzards. By PERCY H. GRIMSHAW. 



PART III. WATER. By A. S. LESLIE. 



PART IV. GRIT. By Dr H. HAMMOND SMITH AND R. H. RASTALL. 



V. Physiology and Anatomy of the Red Grouse. By EDWARD A. WILSON . 100 

 VI. The Weight of Grouse. By EDWARD A. WILSON 130 



PART II. THE GROUSE IN DISEASE. 



VII. Causes of Mortality in the Red Grouse. By LORD LOVAT and EDWARD 



A. WILSON . 147 



VIII. Causes of Mortality in the Red Grouse continued. By EDWARD A. 



WILSON .... . .152 



PART I. THOSE REFERABLE TO ARTIFICIAL CONDITIONS. 

 PART II. THOSE REFERABLE TO NATURAL CAUSES. 



IX. Grouse Disease. By EDWARD A. WILSON and A. S. LESLIE . . . .185 



HISTORY OF GROUSE DISEASE with an account of the work of the Grouse Disease 

 Inquiry in respect of previous work done by Professor Klein, Dr Cobbold, and others. 



vii 



