PREFACE TO THE TWELFTH EDITION 



THIS Edition has been thoroughly revised and brought up 

 to date. The pharmacology has been largely rewritten by 

 my colleague and joint editor, Professor Woodruff ; many 

 additions and alterations have been made in other portions 

 of the text ; and a few of the older and least useful drugs 

 have been deleted. 



To Professor Lander, D.Sc., for revising the chemical 

 formulae, and to Professor German Sims Woodhead, for 

 again undertaking the revision of the pages on bacteriology, 

 I desire to tender my grateful thanks. Of the many 

 valuable works consulted in the preparation of this edition, 

 mention must be made of Cushny's Pharmacology, Dixon's 

 Manual of Pharmacology, Kaufmann's Traite de Thera- 

 peutique et de Matiere Medicale Veterinaires, Gobert's 

 Therapeutique Veterinaire Appliquee ; Mollereau and Porcher 's 

 Vade-mecum du Veterinaire ; Winslow's Veterinary Materia 

 Medica and Therapeutics, Bocquillon-Limousin's Formulaire 

 des Medicaments Nouveaux ; Squire's Companion to the 

 British Pharmacopoeia, and Merck's Annual Reports of recent 

 advances in Pharmaceutical Chemistry and Therapeutics. 



J. MACQUEEN. 



ROYAL VETERINARY COLLEGE, 

 LONDON, 25th April 1910. 



