LETTER OF TRANSMITTAL. 



U. S. Department of Agriculture, 



Bureau of Animal Industry, 

 Washingto/t, D. C, April ^^ 1907. 

 Sir: 1 have the honor to transmit herewith a copy of the Special 

 Report on Diseases of the Horse prepared for reprinting- in accord- 

 ance with the following resolution, approved March 4, 1907: 



Resolved by the tSenate mid Hous^e of Representatives of the United States of America in 

 Congress assembled, That there be printed and bound in cloth two hundred and fifty 

 thousand copies of the special report on diseases of horses, with accompanying illus- 

 trations, the same to be first revised and brought to date under the supervision of 

 the Secretary of Agriculture, one hundred and seventy-five thousand for the use of 

 the House of Representatives, sixty thousand for the use of tiie Senate, and fifteen 

 thousand for the use of the Department of Agriculture. 



As the work was thoroughly revised in 1903, it has been found 

 necessary to make only a slight revision at this time. A brief chapter 

 on ""Osteoporosis, or bighead," by Dr. John K. Mohlei", Chief of the 

 Pathological Division of this Bureau, has been added. 



This report was first issued in 1890 and was at once accorded a 

 hearty reception by the horse owners of the country. The limited 

 edition that the Department was able to publish was very soon 

 exhausted, and the demand was then turned upon Members of Con- 

 gress. As a result of the continuous demand Congress has ordered 

 reprints from time to time until the total editions, including that 

 provided for by the above resolution, approximate 900,000 copies. 



Very respectfully, 



A. D. Melvin, 



Chief of Bureau. 

 Hon. flAMES Wilson, 



Secretary of Agriculture. 



3 



