REPORT OF DR. J. J. WOODWARD, U. S. A., 



ON 



THE PATHOLOGICAL ANATOMY AND HISTOLOGY OF THE RESPIRATORY 

 ORGANS IN THE PLEUROPNEUMONIA OF CATTLE. 



WAR DEPARTMENT, SURGEON GENERAL S OFFICE, 



Washington, June 16, 1870. 



SIR : I have the honor to transmit herewith a report on the Pathological Anatomy 

 and Histology of the Respiratory Organs in the Pleuropneumonia of Cattle, prepared, in 

 accordance with your request, by Brevet Lieutenant Colonel J. J. Woodward, Assistant 

 Surgeon United States Army. 



Very respectfully, your obedient servant, 



J. K. BARNES, 



/Surgeon General. 

 Hon. HORACE CAPRON, 



Commissioner of Agriculture, Washington, D. C. 



ARMY MEDICAL MUSEUM, 



Washington, D. C , June 15, 1870. 



GENERAL: During the summer of 1869 the lungs of several cows, dead of epidemic 

 pleuropneumonia, were brought to the Army Medical Museum by Professor John Gamgee, 

 then engaged in preparing a report for the Commissioner of Agriculture on certain of the 

 diseases of the cattle of the United States; and, in accordance with the wishes of the 

 Commissioner, I undertook the histological investigation of the specimens. I examined 

 them in the fresh condition, and superintended the preparation of a number of permanently 

 mounted sections for microscopical examination, which are now preserved at the museum. 

 (Microscopical Section, Nos. 2781 to 2819, inclusive.) These sections were made, under 

 my direction, by Dr. E. Schaeffer, one of my assistants, and have served, in connection 

 with the observations I made on the fresh specimens at the time of their arrival, as the 

 basis of the following paper. 



My attention was first drawn to the pleuropneumonia of cattle in the fall of 1860, 

 by Dr. J. Newton Evans, of Hatboro , Montgomery County, Pennsylvania. This gentle 

 man kindly placed at my disposal the lungs of several cattle dead of the disease during 

 an epidemic which prevailed near Hatboro at the time. I have since had various oppor 

 tunities of examining the thoracic viscera in this complaint, and during the year 1869, 

 besides the specimens furnished by Professor Gamgee dissected at the museum, the body 

 of a tame deer (Cervus virgmianus) which had died suddenly of the same disorder, and in 



