in surgical diseases. 29 The favourable or unfavourable prognosis in diseases as known from messengers, omens and dreams. 30 Prognosis from the perversion of sense perception. 31 Prognosis based on the altered condition of features, etc. 32 Prognosis based on the perversion in the external appearances of the body. 33 Palliative treatment of incurable diseases. 34 The precautions to be taken (against dangers, such as poisoning of water, etc. by a medical man for the safety of a king whose army is on the march. 35 Clinical observations made by physicians. 36 Miscellaneous subjects connected with the treatment of injuries and surgical diseases. 37 The examination of the soil for the selection of vegetable products growing on it to be used as medicines. 38 Classification of drugs according to their therapeutical uses. 39 The two classes of drugs which cleanse the system [by evacuating bad humours] and drugs which pacify the irritated humours. 40 Drugs, their flavours, properties and maturity. 41 The properties of drugs specially considered. 42 Flavours. 43 The choice of emetics. 44 The choice of purgatives. 45 Liquids. 46 Food and drink.
From their investigating the (pathological) causes and symptoms of diseases, they 'are called Nidanam, (etiology) and are sixteen in number.
