; amentia serosa, caused by an accumulation of serous fluid in the brain a butcher had noted that mad ewes 'neither ate nor drank', and that their cerebral matter 'was entirely changed to water'; amentia a venenis, brought on in particular by opium; amentia a tumore; amentia microcephalica Sauvages himself had seen 'this type of dementia in a young girl in the hospital in Montpellier: she was called the Monkey on account of her tiny head, and because of her resemblance to that animal'; in a general manner, nothing weakened reason more than drying out of fibres, and amentia a siccitate was observed whenever the fibres became desiccated, frozen or coagulated, as demonstrated by the case of three young women who had been riding in a cart in the depths of winter, and were taken with dementia.