Cbap. 5G.] STJMMAET. 221 



delicate long veins. ^* This substance has the same virtues as 

 the one last mentioned, but is more active in its effects. 

 Hence it is that it enters into the composition of cauteries 

 and depilatory preparations. It is also used for the removal 

 of hangnails, polypi of the nostrils, condylomatous tumours, 

 and other kinds of excrescences. For the purpose of increas- 

 ing its energies, it is heated in a new earthen vessel, until it 

 changes its colour.^^ 



Summary. — Eemedies, one hundred and fifty-eight. Facts, 

 narratives, and observations, nine hundred and fifteen. 



EoMAN Authors quoted. — L. Piso,^® Antias,^^ Yerrius,^^ M. 

 Varro,39 Cornelius Nepos,**' Messala,*^ Rufus,'*^ the Poet 

 Marsus,"*^ Bocchus,"* Julius Bassus"^ who wrote in Greek on 

 Medicine, Sextus Niger*^ who did the same, Fabius Yestalis.''^ 



Foreign Authors quoted. — Democritus,''^ Metrodorus*^ of 

 Scepsis, Mensechmus^*' who wrote on the Toreutic art, Xeno- 

 crates" who did the same, Antigonus^'^ who did the same, 

 Duris^^ who did the same, Heliodorus^* who wrote on the 

 Votive Offerings of the Athenians, Pasiteles®^ who wrote on 

 Wonderful Works, Timaeus^ who wrote on the Medicines de- 



3* The other two mentioned species naturally divide into laminae, while 

 this kind is disposed to separate into fiue fibres. — E. 



3^ By this process a considerable portion of the sulphur is expelled, so 

 as to cause the orpiment to approximate to the state of arsenic. — B. 



2^ See end of B. ii. ^7 gg^ end of B. ii. ^s ggg end of B. iii. 



39 See end of B. ii. ^o gee end of B. ii. 



*^ A difi'erent person from the Messala mentioned at the end of B. ix. 

 He is mentioned in B. xxsiii. c. 14, B. xxxv. c. 2, and in Chapter 38 

 of this Book ; but nothing further seems to be known of him. 



*2 See end of B. vii. and Note 94 to B. vii. c. 53. 



*3 Dqmitius Marsus, a poet of the Augustan age, of whom few particulars 

 are known, except that he wrote an epitaph on the poet Tibullus, who died 

 B.C. 18. He is mentioned by Ovid and Martial, from the latter of whom 

 we learn that his epigrams were distinguished for their wit, licentiousness, 

 and satire. ^^ See end of B. xvi. *5 ggg end of B. xx. 



"6 See end of B. xii. ^^ See end of B. vii. ^^ gee end of B. ii. 



49 See end of B. iii. so gge end of B. iv. 



5^ See c. 19 of this Book, Note 1 1, page 184. ^2 gee end of B. xxxiii. 



53 See end of B. vii. 54 ggg e^j Qf j^^ xxxiii. ^^ See end of B. xxxiii. 



^ See end of B. xxxiii. 



