820 EXPERIMENT STATION RECORD. 



cattle, l)ut (lid nut jrivc satisfactory rcsultss in controllinfi tlic (lisacaHc. On account of 

 the (lanj^cr connected ^vith the use of corrosive sublimate in the treatment of foot-and- 

 mouth disi-ase tlu> authors recommend that it be entirely disrepirded in favor of 

 other remedies. 



Parturient apoplexy {/>''/. A'jr. imd Fisherirs ILondon'], I.cdjlrt. .96", pp. 3). — 

 Notes are given on the symptoms, methods of prevention, and trciatment of this dis- 

 ease. In cows which are predisposed to the disease it is recommended that iodid of 

 potash infusion be given immediati'ly after calving, whether the symptoms of the 

 disease have appeared or not. 



Parturient paresis in cows, Hohma-xx (Berlin. Ticriirztl. WditiKcJir., 190S, No. 

 23, }>i>. .!f!J--!H4). — The author briefly reviews the various theories which have been 

 pro])osed in explanation of this disease. An examination of a number of cases showed 

 that the uterus was never contracted, as has been claimed by several writers, and 

 that an obstruction to the flow of blood in the jugular vein did not cause hyperemia 

 of the brain. Experiments were tried in which the normal circulation of the blood 

 was interfered with in variousways, for the purpose of testing the influence of such 

 artificial interference upon the blood pressure and the cerebral activity of the 

 animals. 



It was found to be impossible to produce any jironounced effect upon t)ie brain 

 action by ordinary means used in altering the blood circulation. The author 

 believes that the essential lesions of the disease do not occur in the nuisculature, 

 since meat of animals suffering from parturient paresis has been shown to l)e a harm- 

 less food material. The author believes that the symptoms of this disease closely 

 resemble those of eclampsia and may he due to extensive disturbances in the nerv- 

 ous control of the blood circulation. In the experience of the author all cases of 

 this disease must be considered as of a serious nature and likely to prove fatal if evi- 

 dence of paralysis of the medulla oblongata appears before any remedies are applied. 



In treating the disease the author reconunends that the animal ])e maintained in a 

 position so that it rests upon all 4 legs, tliat the head be kept in anujiright position, 

 and tliat cold applications be made to the head and neck. If thei'e is evidence of 

 paralysis of the Ijrain it may be well to give subcutaneous injections of spirits of 

 camphor or caffein. These operations should always Ije associated with the applica- 

 tion of the Schmidt method and treatment by means of compressed air. 



Treatment of parturient paresis by means of oxygen, A. Zehl {Berlin. 

 Tiernrztl. Wchnschr., 1903, No. 30, pp. 469-471).— The author treated 9 cases of this 

 disease with oxygen, and gives detailed notes on the history of all these cases. A 

 complete recovery took place in all cases and the author believes that this method 

 is perhaps most satisfactory in the treatment of parturient paresis. In the author's 

 experience this disease develops in cows which have been dry for a few weeks pre- 

 vious to calving, and never occurs in cows which are milked up to the time of par- 

 turition. The author Ijelieves, therefore, that a long dry period before calving must 

 be considered a predisposing cause of the disease. The beneficial effects of oxygen 

 are regarded as due to the purely mechanical action of such treatment. 



Infectious pneumo-pleuritis in calves, Evers {Berlin. Tierdrztl. Wdmschr., 

 1903, No. 17, pp. 277, 278). — The author tested the effect of Collargol in the treat- 

 ment of diarrhea of i-alves, but found during these experiments that wliile the diar- 

 rhea yielded ])romptly to this treatment a large proportion of the calves died later of 

 I)neumo-pleuritis. This disease appeared in a number of localities in an epizootic 

 form and attacked calves varying in age from 8 days to 4 months. In young calves 

 death occurred within 4 days after the out1)reak of the disease, while in older 

 animals the course of the disease was somewhat prolonged. 



The pathogenic, findings in cases of this disease varied according as the disease 

 assumed a chronic or acute form, but resembled in a general way those of swine 

 plague. In young calves affected with the acute form of the disease the pathological 



