PREFACE xi 



combined with Chap, xiv., on the Parasitic Protozoa, Chap, 

 xv., on the Tapeworm, and Chap, xvi., on the Ectoparasites, 

 into a chapter dealing briefly with all the Parasites and Protozoa 

 of Grouse other than those which are directly responsible for 

 " Grouse Disease." The subject of " Grouse Disease " proper is 

 dealt with in the original Report under the headings of Chap, x., 

 Strongylosis, and xi., Coccidiosis, and these two chapters 

 are again published in an abbreviated form in the present volume. 

 Chap, xii., on Pathology, and Chap, xiii., on the Blood of Grouse, 

 are omitted, but reference to these subjects is made in some of 

 the other chapters of the book. 



It will be seen that Part II. of the original Report has 

 suffered very considerable reduction, but this is quite in accord- 

 ance with the intention already expressed of making this book a 

 practical guide to sportsmen and naturalists rather than a 

 specialised study of the diseases of Grouse. With the same 

 object, a special chapter has been added, in which an attempt 

 is made to show how far the observations in the laboratory 

 have been confirmed by observations on the moor, and though 

 it is not claimed that this department of the investigations is 

 complete, the chapter may indicate the lines on which future 

 investigations may proceed. 



Part III., which deals chiefly with the management of 

 Grouse moors, is of direct practical interest to moor-owners, 

 and has been reprinted almost without alteration. 



As already stated, the lists and inventories which compose a 

 great part of the Appendix to the original Report, are omitted, 

 and the only other subjects dealt with in the Appendix are 

 incorporated in Part II. of the present edition. 



Owing to the manner in which the work of separate writers 

 has often been combined in the same chapter, it would be in- 

 vidious to ascribe each chapter to the authorship of one or 

 other of the Committee's Staff, but it may be of interest to give 



