EXPERIMENT STATION REPORTS. 169 



trnrted. The liead rapiiot be placed in any otlier T)osition without con- 

 siderable force. As the disease advances, the sheep can not. or at least 

 will not stand. Constipation is present. INfanv may injnre the cornea 

 and conjunctiva while struaffling. Death usually occurs in a week. It 

 is usually found that these flocks are subiected to a diet in which succu- 

 lent feed and a proper irraiu ration is conspicuously absent, and where 

 coarse fodder forms the bulk, or the entire ration. Even where clover 

 hay is used, it is usually very coarse and woodv. Bean vines are very 

 frequentlv used in excess, and Dr. Oohn has susnected them of beinsc 

 responsible for the trouble in lar?e part. It is also found that the 

 sheep are too closely contined. usually havingr only a small lot for ex- 

 ercise from fall until after the lambinjr season is over. 



Under the head of neurasthemia. Dr. Law has described a condition 

 in prejjnant ewes similar to many of the Clinton county cases. A proper 

 diet and enforced exercise, if necessary, are recommended by Dr. Law. 

 Dr. Gohn adopts the same plan with success. 



On 4-17-11. I visited the farm of Mr. Rodswell. about 9 miles from 

 St. Johns with Dr. Gohn. We found, in a flock of a.bout 20 or more, 

 three ewes affected and showinof symptoms much as has been described. 

 Each showed considerable mucous nasal discharg:e. None of the sheep 

 could stand. Only four lambs had been dropped thus far. We killed 

 the three affected ewes, all in sfood flesh. 



No. 1 had single fetus nearly full term. Organs nearly all normal. 

 Few Oesoph. columbianum. very few Haemonchus contortus. Rumen, full 

 and contents quite drv and firm. Reticulum, omasum and abomasum 

 practically empty, as was small intestine. Liver showed yellowish tinge 

 and bile ducts and bladder fill of normal bile. Larare intestine contained 

 dry, firm feces. Gastro-intestinal mucosa, pale p'enerally. Brain showed 

 very slight conjjestion of mening:es, otherwise firm. One larjre Oestrus 

 ovis larva found in nasal passages. All nasal mucosa, intensely con- 

 gested. 



No. 2: Not pregnant. Organs nearly all normal, except that the 

 reticulum and abomasum were nearly eniTity, and the omasum and 

 small intestine were practically empty. Few Oesophngostoma colnm- 

 bianum and very few Haemonchus contortus. Gastro-intestinal mucosa 

 very pale. Liver, yellowish, and gall ducts and bladder filled with 

 bile. Brain as in No. 1. Nasal mucosa intensely congested. In left 

 frontal sinus considerable mass of yellow jms and necrotic tissue or 

 debris. No oestrus laiwae. 



No. 3: Two fetuses nearly full term. Organs nearly all normal. 

 Few Oesoph. columbianum, and quite numerous young Haemonchus 

 contortus. Rumen contents, normal. Reticulum and abomasum con- 

 tained only small amount of food. Omasum and small intestine, prac- 

 tically empty. Gastro-intestinal mucosa, pale. Contents of large in- 

 testine, dark and very fine. Nasal mucosa, congested. Right frontal 

 sinus contained thickened inflammatory mucosa. One small Oestrus 

 larva found. Brain as in Nos. 1 and 2." — [Ward Giltner.] 



Wo7V)is in Pigs at Hnstinfjs, Mich. — "As a result of considerable cor- 

 respondence. I visited the farm of M Bros., near Ha.stings in 



order to determine the cause of unthriftiness of their pigs. It was 

 known that hog cholera visited this region about seven years ago, and 

 the correspondence suggested chronic cholera. However, they had 



