X PREFACE. 



been thoroughly investigated, and likewise many other maladies 

 have been carefully studied. 



In the following pages we treat more particularly of the 

 diseases and disorders of the ox and sheep ; but now and again 

 we have discussed our subjects from a more general aspect. 

 We may say here, what we shall afterwards have occasion to say 

 again, that the maladies with which the sheep is liable to be 

 afflicted are of vastly greater importance than is often recog- 

 nised, and that a great deal of wealth might be saved by 

 thoroughly careful management of sheep. In so far as we 

 may have cleared up any obscure points connected with the 

 disorders of sheep, we feel pleasure in the achievement of 

 our purpose in this respect. Our readers will see a great 

 resemblance betwixt the diseases of cattle and those of sheep, 

 and hence it would have been a pity to have omitted the latter. 



The very fullest possible acknowledgment is due, and is hereby 

 made, for the kindly aid and unremitting help and encouragement 

 of Dr. Albert Gresswell, whose part in the production of this book 

 is also stated on the title-page. Without his assistance the 

 work could not have been carried through to completion. 



Another brother, Dr. D. Astley Gresswell, has kindly read 

 through the proof sheets of this work, as it has passed 

 through the press. He has corrected certain errors, has rectified 

 several inaccuracies, and made valuable improvements and 

 additions. 



To Mr. James Brodie Gresswell, F.R.C.V.S., the authors 

 are also grateful for certain notes supplied, also for verbal 

 information now and again made use of — for instance, of 

 cases of disease in stock to which this distinguished veterinarian 

 has been summoned, diseases which have been met with in the 



