CORNSTALK I)ISP:A.SE IN CATTLE 517 



by some poisonous substance contained in the forage. They 

 propose the name "forage poisoning" for "cerebrospinal 

 meningitis" and leucoencephalitis suggested by MacCallum 

 and Buckley. It is highly probable that up to the present 

 time, cases of uncomplicated meningitis and possibly cerebritis 

 have been confused with the disease in question. The entire 

 subject must await the results of further investigation. 



i^ 403. Differential diagnosis. This disease is to be 

 differentiated from other forms of cerebral affection and rabies. 

 The differentiation can be made from the clinical histor}' of 

 the case, and from the character of the lesion in the interver- 

 tebral ganglia and if neces.sary by the results of animal 

 inoculation. 



REFERENCES. 



1. Favillk. So-called spinal meningitis. ^1/1. Vet. Review, 

 Vol. XVII, p. 9. 



2. Hickman. Epizootic cerebro-spinal meningitis of horses. 

 Tzventy-third annual report, Bureau 0/ Animal Industry, 1906. 



3. Martin. Cerebro-spinal meningitis. Ibid. Vol. XXI, p. 289. 



4. McCallum .and Buckley, .\cute epizootic Leucoencephalitis 

 in horses. Bulletin No. So, Md. Agric. Exp. Station, 1902. 



5. McCarthy and Ravenel. A pathology for forage poisoning, 

 or the so-called epizootic cerebro-spinal meningitis of horses. The 

 Journal of Medical Research, Vol. X (1903 |, p. 243. 



6. Sied.amgrotzkv and Schlecel. Epizootic cerebro-spinal 

 meningitis in tlie horse. Archiv fi'ir iviss. u. prakt. Thierheilk. Bd. 

 XXII. (Abstract), yo«;'. Com. Path, and Thcra., \'ol. IX, p. 233. 



CORNSTALK DISEASE IX CATTLE. 



§ 404. Characterization. The naiue "cornstalk disease" 

 has been given to a somewhat mysterious affection from which 

 cattle sometimes suffer while feeding in cornstalk fields late in 

 the fall and earl}- winter. The meaning generally accepted 

 and intended to be conveyed by this term is, that an animal or 

 a number of animals, usualh- cattle, have died suddenly after 

 feeding in a cornstalk field from four to ten days. From a 



