TRANSLATOR'S PREFACE 



THE success of Professor Orla- Jensen's " Dairy Bacteriology," 

 in the original as well as in the German, Dutch, and Finnish 

 translations, has led me to hope that an English translation might 

 find a welcome. The author has had the unique experience of an 

 intimate knowledge of the highly-evolved dairy industries of two 

 countries so widely different as Denmark and Switzerland, and, 

 as the reader will find, he is keenly interested in the valuable 

 work which has been carried out in English-speaking countries, 

 particularly in America. 



The translation has been based on the second Danish edition 

 of 1916, which is the standard text-book on its subject for Danish 

 students of dairying. As Professor Orla-Jensen has spared him- 

 self no pains in correcting and adding to the text in order to bring 

 it thoroughly up-to-date, the present edition may be regarded as 

 an entirely new one. Certain portions of purely local interest 

 have been omitted, though the number of omissions on this 

 account have been very few ; the scientific character of the 

 work as a whole renders it of international interest. 



At the present time, when the question of pure milk is beginning 

 to attract the attention which it deserves in the United Kingdom, 

 it is hoped that the work may offer some useful suggestions to 

 those engaged on the difficult problems which the whole question 

 involves. In spite of the modesty of the author's claims I 

 consider that his book should also convey something to those who 

 can read between the lines, and on this account I venture to hope 

 that not only students, but also dairymen and all others who 

 have to deal with milk and dairy products, whether from the 

 medical, veterinary or analytical side, will find something of 

 interest in its pages. 



In conclusion, I wish to express my thanks to Mr. D. R. Wood, 

 Public Analyst for the County of Somerset, for kindly reading 

 the MS. and offering useful hints. 



PAUL S. ARUP. 



Liverpool. 



524744 



