TO 



D'ARCY POWER, Esq., 



M.A., iM.B. (OxoN.), F.R.C.S., F.S.A., 



Surgeon to St. Bartholo^[ew's Hospital, and late Lecturer on Histolo(;v at 

 THE Ru\-A[, Veterinary College, London, 



this book is dedicated 



AS A SLIGHT TOKEN OF THE AUTHOR S DEEPEST GRATITUDE 



