Chap. 60.] 8UMMABY. 239 



happened to be cloudy, until the ensuing lustrum ; at which 

 time Scipio Nasica, the colleague of Laenas, by means of a 

 clepsydra, was the first to divide the hours of the day and 

 the night into equal parts : and this time-piece he placed under 

 cover and dedicated, in the year of Eome 595 ; 76 for so long a 

 period had the Bomans remained without any exact division 

 of the day. We will now return to the history of the other 

 animals, and first to that of the terrestrial. 



STTMMAEY. Kemarkable events, narratives, and observa- 

 tions, seven hundred and forty-seven. 



ROMAN AUTHORS QUOTED. Yerrius Flaccus^Cneius Gellius, 78 

 Licinius Mutianus, 79 Massurius Sabinius^Agrippina, the wife 

 of Claudius, 81 M. Cicero, 82 Asinius Pollio, 83 M. Yarro, 84 MessaLi 

 Rufus, 85 Cornelius Nepos, 86 Virgil, 87 Livy, 88 Cordus, 89 Melis- 



76 Vitruvius describes this instrument. Marcus, Ajasson, vol. vi. pp. 

 218, 219, gives us an account of two kinds of clepsydrae, or water-clocks, 

 which were constructed by the Greeks. B. See also the account of clocks 

 in Beckmann's History of Inventions, vol. i. 77 See end of B. iii. 



78 He was a contemporary of the Gracchi, and was author of a His- 

 tory of Rome, down to B.C. 145 at least; supposed to have been very vo- 

 luminous and full in its details of the legendary history of the Roman 

 nation. Livy probably borrowed extensively from it. 



79 See end of B. ii. 



80 A hearer of Ateius Capito, and celebrated as a jurist under Tiberius 

 and later emperors. From him a school of legists, called the Sabiniani, 

 took their rise. He wrote some works on the Civil Law. Pliny quotes 

 him, as we have seen, in c. 4, to show the possibility of gestation being 

 to the thirteenth month. 



81 Daughter of the elder Agrippina and Germanicus, and the mother of 

 Nero. Her memoirs of her life are quoted by Tacitus, but we have no 

 remains of them. 



82 The great Roman orator and philosopher. 



83 A distinguished orator, poet, and historian of the Augustan age. He 

 was an active partisan of Csesar, and the patron of Horace and Virgil, 

 whose property he saved from confiscation. He wrote a history of the 

 civil war in seventeen books, but none of his works have come down to us. 

 His tragedies are highly spoken of by Virgil and Horace. 



84 See end of B. ii. 



85 Nothing whatever seems to be known relative to this author, who is 

 mentioned in c. 53 of this Book. See the Note to that passage. 



86 See end of B. ii. 



8 ? The author of the JEneid and the Georgics, the friend of Augustus, 

 Pollio, and Maecenas, one of the most virtuous men of ancient time, and the 

 greatest probably of the Latin poets. 88 See end of B. vi. 



b9 Cremutius Cordus, a Roman historian, who was impeached before 

 Tiberius, by two of his clients, for having praised Brutus, and styled Cassias 



