EXPERIMENT STATION UKPOltTS. 157 



A uuinbcr ol" specimens of tissue from animals liave been sen I io (he 

 laboralory for bacteriological and i)a(li<)lo<iical examination. In a large 

 ]ier cent, of lliese cases the tissue is badly decomjjosed or iiisunicicnt 

 material is sent, so that a diagnosis cannot be made. Among I he posi- 

 tive cases recorded from the above material we find: 



llabies, cow 2 cases 



CEsophagostoma columbianum, sheep 2 " 



Actinomycosis, cow 1 " 



Hematoma, coav 1 " 



Cellular infiltration of arteries, brain of horse 1 " 

 (A condition said to occur in forage poisoning). 



Hog cholera 1 " 



Sarcoma of testicle, chicken 1 " 



Tuberculosis, human 2 " 



Among the animal diseases investigated for the Live Stock Sani- 

 tary Conmiission, we record the following interesting cases: 



SCOURS OF THE NEW-BORN. 



On Oct. 22, 1912, T was called to the farm of Dr. P near 



Jackson to investigate a disease of calves. Since May IT calves have 

 been born, 11 of which have died within 3 to 1 days of birth with 

 diarrhoea associated with fever and great weakness. The cows are 

 well cared for, are kept in a well lighted, sanitary and comfortable barn 

 of cement construction, in the south end of which are 2 large maternity 

 stalls of cement and steel construction. One of these is used exclusively 

 for calving. I am told that after each case of parturition this stall is 

 thoroughly cleaned, disinfected and that each succeeding case is suy)- 

 ]>lied with fresh, clean bedding. The umbilicus of each calf is washed 

 ^^'ith a weak iodine solution soon aft(H' birth. 



At the time of this visit I found one sick calf, age, 9 days. Had 

 had diarrhoea 3 days, fecal discharges of steel-gray color, eyes bright 

 and apjictite good. There was one dead calf, age. 3 days. Had been 

 sick 114 days. Post-mortem lesions on this calf Avere : Lungs, liver 

 and kidney congested; capillaries of pericardium and mesentery highly 

 injected. Alimentary canal contains very little material, of a yellowish- 

 white color and watery consistency. Mucous membranes congested, um- 

 bilical vessels not engorged. Carpal articular sacs contain a small 

 amount of blood-tinged synovia. The tarsal articular sacs contain a 

 somewhat larger quantity of blood-tinged exudate but an inflammatory 

 condition of the articular surfaces is not pronounced. 



On Xov. 3, I again visited this farm to autopsy calf referred to above. 

 The calf had been dead only 3 or 4 hours when I reached the farm. 

 Post-mortem lesions were: Calf considerably emaciated, hyperemia of 

 heart and pericardium, and a small hemorrhagic area about 1 cm. in 

 diameter under endocardium of bicuspid valve; liver and kidneys highly 

 congested, bowels constipated, mucosa of fourth stomach, small and 

 large intestines highly injected; mesenteric lymph glands injected, um- 

 bilical vessels apparently normal. On both tarsal articulations there 

 is an inflammatory area about 2 to 2% cm. in diameter. Synovial sacs 

 contain blood-streaked effusion in which is found small flakes, pre- 

 sumably fibrin. The peri-articular membranes are edematous. From 

 the tarsal articulations of both of these cases, a small non-motile, polar- 



