BOOK I 



Book XXXI. Contents : drugs obtained from aquatic 

 animals. (i) Remarkable facts as to waters. (ii) 

 Differences in waters. (iii-xvi) Medicinal properties : 

 266 observations ; what sorts of waters are good for 

 the eyes, what sorts produce fertiUty, what sorts cure 

 insanity, what sorts gall-stone, what sorts wounds, 

 what sorts protect the embryo, what sorts remove 

 tetter, which make dye for wools, which for human 

 beings, which produce memory, which forgetfulness, 

 which keenness of sense, which slowness, wliich a 

 musical voice, which disUke of wine, which intoxica- 

 tion, which fill the place of oil, which are salt and 

 bitter; springs discharging rocks, springs that cause 

 laughter or weeping, springs said to cure love. 

 (xvii) Water keeping hot for three days after being 

 drawn. (xviii-xx) Remarkable waters : waters in 

 which all objects sink, in which no objects; watei*s 

 that kill, poisonous fishes ; waters that turn into 

 stone, or produce stones. (xxi-iii) Health-giving 

 property of waters ; impurities of waters ; mode of 

 testing waters. (xxiv f.) The Marcian Spring, the 

 Maiden Spring. (xxvi-ix) Method of finding water ; 

 signs of springs ; differences of waters according to 

 kinds of earth ; variation of springs with the seasons. 

 (xxx). Historical account of springs suddenly arising 

 or stopping. (xxxi) Method of carrying water in 

 pipes. (xxxii f.) Medicinal waters, mode of employ- 

 ing, for what kinds of illnesses ; ditto sea-water, 

 29 kinds. Benefits of a voyage, 5. (xxxiv-vi) 

 Sea-water at places inland, 1 method of producing, 

 sea-water-honey 1 , water-honey 1. (xxxvii f.) Remedy 

 against foreign waters ; 6 drugs from moss ; drugs from 

 sands. (xxxix-xlv) Salt, kind^^ of, preparations and 

 di-ugs from, 204 observations j liistorical importance 



141 



