152 OP PROGNOSTICKS. CHAP. 4. 5. 



approaching serenity.* Every one is acquainted 

 with the additional clearness of a night inter- 

 vening between wet and clear frosty weather. 

 By the general disposition of the clouds, we 

 may, in general, prognosticate fair or rainy 

 weather. In the most settled weather, only 

 diurnal cumuli appear ; they are well defined, 

 increase towards the middle of the day, and 

 decrease at night. Of this enough has been 

 already said in the chapter on the clouds. 

 The brightness and heat of the fire in winter 



* Nee minus ex imbri soles et aperta serena 

 Prospicere et certis poteris cognoscere signis 

 Nam neque turn stellis acies obtusa videtur 

 Nee fratris radiis obnoxia surgere luna 

 Tenuia nee lanae per coelum vellera ferri 

 Non tepidum ad solem pennas in littore pandunt 

 Delectae Thetydi halcyones, non ore solutos 

 Inmundi meminere sues jactare maniplos. 

 At nebulae magis ima petunt, campoque recuinbunt ; 

 Solis et occasum servans de culmine summo 

 Nequidquam seros exercet noctua cantus. 



Virg. Geor. i. 403. 



Turn liquidas corvi, presso ter gutture voces 

 Aut quater ingeminant, et saepe 'cubilibis altis 

 Nescio qua praeter solitum dulcedine laeti 

 Inter se foliis strepitant juvat imbribus actis 

 Progeniem parvam dulcesque revisere nidos. 



Virg. Geor. i. 414. 



