SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE. 



Friday, September 8, 1905. 



CONTEIS^TS. 



The Advance in our Knowledge of the Causa- 

 tion and Methods of Prevention of Stock 

 Diseases in South Africa during the Last 

 Ten Years, I : Colonel D. Bruce 289 



European and American Science: Dr. Lewel- 

 LYS F. Barker 299 



Scientific Books: — 



Bolton's Select Bibliography of Chemistry: 

 Professor Jas. Lewis Howe 304 



Scientific Journals and Articles 305 



Discussion and Correspondence: — 



The Mutation Theory: Capt. Thos. L. 

 Casey 307 



Special Articles: — 



The Spearman Correlation Formula: Dr. 

 Clark Wissler. Treatment of Simple Har- 

 monic Motion : Dr. I. Thornton Osmond . . 309 



The British Association and Affiliated and 

 Corresponding Societies 312 



The ~!}\eiu Munich Clinic: Dr. Stewart Patton 313 



Standard Time in America 315 



Scientific Notes and Neivs 318 



University and Educational IVews 32o 



MSS. inteuded for publication aud books, etc., intended 

 for review should be sent to the Editor of Science, Garri- 

 son-on-Hudaon, N. Y. 



THE ADVANCE IN OUR KNOWLEDGE OF THE 

 CAUSATION AND METHODS' OF PRE- 

 VENTION OF STOCK DISEASES 

 IN SOUTH AFRICA DURING 

 THE LAST TEN YEARS} 



I. 



Ten years ago, when I first came to 

 South Africa, I was led to take an interest 

 in the various great stock diseases which 

 do so much damage and so retard the prog- 

 ress of South Africa as a stock-raising 

 country. I thought, therefore, that a good 

 subject for my address, in the center of 

 the foremost stock-raising colony of South 

 Africa, would be a review of the work done 

 in advancing our knowledge, during the 

 last ten years, of the causation and methods 

 of prevention of stock diseases in South 

 Africa. 



South Africa is particularly rich in ani- 

 mal diseases, every species of domestic ani- 

 mal seemingly having one or more specially 

 adapted for its destruction. Now it is evi- 

 dent that, in an address of this kind, it will 

 be impossible to take up every stock disease, 

 but I think you will agree with me that 

 those shown on this table are among the 

 most important: East coast fever; ordinary 

 redwater or Texas fever; biliary fever of 

 horses ; malignant jaundice of dogs ; nagana 

 or tsetse-fly disease ; trypanosomiasis of 

 cattle ; rinderpest ; horse-sickness ; catarrhal 

 fever in sheep ; heart-water of sheep, goats 

 and cattle. 



Now we may group these diseases in vari- 



^ Address of the president of the Physiological 

 Section of the British Association for the Ad- 

 vancement of Science, South Africa, 1905. 



