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Abstract
Extract
Increasing references have been made in the recent veterinary literature to malacic diseases of the nervous system in sheep and other animals. Plowright (Citation1954) and Innes and Plowright (Citation1955) have described a focal symmetrical spinal poliomalacia of unknown aetiology in sheep in Kenya. In the U.S.A., Cordy (Citation1954) has described a focal symmetrical encephalomalacia of horses following the ingestion of a species of thistle, and Jensen et al. (Citation1956) have described an idiopathic polio-encephalomalacia in cattle and sheep. In New Zealand, Hartley (Citation1956) has described a focal symmetrical encephalomalacia (F.S.E.) of lambs that may be related to the sublethal effects of the toxin of Clostridium perfringens (welchii) Type D. Smith (Citation1957) has described widespread lesions of polio-encephalomalacia together with eosinophilic meningoencephalitis in sodium chloride poisoning of swine.