EXPERIMENT STATION REPORTS. 141 



man's case and other cases coming under his observation, and the disease 

 described by Mohler, Beebe, Franics and Marsteller, and Schoenleber 

 leads us to conclude that we are dealing with Infectious Anaemia in 

 northern Michigan. 



The Secretary of the State Live Stock Sanitary Commission requested 

 the Bacteriological Department to investigate an outbreak of an un- 

 determined disease of sheep near White Pigeon, Michigan. 



On April, 4, 1909, in the afternoon, I was taken to the farm of Mr. 



, one mile west of White Pigeon by Dr. Conkey of Constan- 



tine. Mr. had been losing sheep, breeding ewes, during the 



last three weeks. Mr. C. A. Tyler had visited the farm without making 

 a diagnosis. He had sent Dr. Haggerty of Coldwater to investigate the 

 trouble and Dr. Haggerty had pronounced it "Neurasthenia." Mr. 



had lost 14 out of 42 ewes. Dr. Conkey believed that the 



trouble was due to the fluke, since his observations in a number of post- 

 mortem examinations revealed only a badly diseased liver and con- 

 gestion of the lungs. However, he had found no flukes present. 



I found that Mr. had bought these sheep in September, 1908, 



of a neighbor who had sold them for young sheep — which they were 

 not. They had been kept on dry clover pasture on both farms, accord- 

 ing to Mr. . They were in poor condition when bought, but 



gained in flesh and were in very good condition at time of shearing, 

 about four weeks before my visit. They showed a great number of 

 sheep "ticks" (melophogus ovina) when slieared. After shearing, the 

 sheep began to get thin and weak, although they had plenty of corn and 

 oats and a little alsike clover, timothy hay, and shredded corn stalks; 

 no succulent feed had been used all winter. 



Ewes were lambing at the time of visit, but very few lambs were 

 saved, and those only by use of cow's milk. One single lamb, only a 

 lew hours old, was unable to stand, and its mother was greatly ema- 

 ciated. All the ewes were extremely thin, some of them seemed hungry, 

 trying to eat corn cobs and picking at refuse in feed manger. 



The thinest and weakest ewe was killed by bleeding and examined: 



Emaciation extreme; visible mucosae very pale; had given birth to 

 twin lambs the week before, and lost both ; os uteri, not yet closed and 

 considerably bloody, mucous discharge in uterus; almost no develop- 

 ment of mammary glands; liver, perfectly normal, except for small 

 nodule (Oesoph.-columb) near neck of cholecyst which was filled with 

 normal bile ; spleen, kidneys, and pancreas no'rmal ; rumen, reticulum 

 and omasum and contents, normal ; abomasum, nearly empty ; con- 

 siderable number of stomach worms (Str. contortus) present; small 

 intestines, nearly empty, few minute hemorrhages in mucosa of duo- 

 denum; large intestine, normal, contents very dry; very few nodules 

 along intestines; lymph glands, normal; lungs show only one small con- 

 gested area; heart, normal. 



No conclusion can be drawn. 



REPORT ON TWO CASES OP SUSPECTED OMPHALO-PHLEBITIS IN LAMBS. 



Received from Dr. Fred W. Olley, Caledonia, Mich., two lambs by 

 express, March 2.5, 1909 a. m.; shipped, March 23, 1909 p. m. 



Accompanying letter says: "Appear all right and in about 10 hours 



