PREFACE 



THIS book has been written in the hope that it will be of assistance 

 to veterinary students, veterinary practitioners, and others con- 

 cerned with the well-being of animals. The requirements of those 

 studying for the Diploma of Veterinary State Medicine have been 

 kept in mind, and special attention has been given to certain branches 

 of Public Health work with which they should be conversant. 

 Other sections of veterinary science which might have been included, 

 such as Dietetics, Zootechny and Milk Hygiene, have been omitted, 

 as their importance merits a more detailed consideration than could 

 be accorded in one volume. It is anticipated that they will later 

 form additions to the Series. 



I take this opportunity to express my gratitude to many friends 

 for assistance in the preparation of the manuscript. Ventilation 

 and Building Construction were written in collaboration with 

 Mr. J. Alex. M'William, Licentiate R.I.B.A., P.A.S.I., whose wide 

 practical knowledge and keen interest in the housing of live-stock 

 have been of exceptional value; to him also I am indebted for 

 illustrating these sections and feel sure that the care and labour he 

 has bestowed on this important part of the book will be appreciated. 

 The greater part of Preventive Medicine was written in conjunction 

 with Capt. F. C. Minett, M.B.E., R.A.V.C. ; Dr. G. A. Carse wrote 

 the section on Meteorology; Professor G. H. Gemmell, F.I.C., 

 criticised the sections dealing with Air and Water; Mr. G. W. 

 Tully, M.R.San.L, read the manuscript on Sanitation and made 

 many helpful suggestions; my colleagues, Professor J. Russell Greig 

 and Mr. Wm. C. Miller, have been helpful in reading and correcting 

 proof. The illustrations for the section on Sanitation were drawn 

 by Mr. J. C. Dorsie, Kirkintilloch, and Mr. A. H. Baird, Edinburgh, 

 kindly loaned those for Meteorology. 



To the Publishers I am indebted in many ways, and particularly 

 for the manner in which they have permitted free use of illustrations. 



R. G. LINTQN. 



EDINBURGH, February, 1921. 



