122 On the UTILITY of defining 



When tempejlivus is. applied to events, it fuppofes them ei- 

 ther as returning in a regular viciflitude, or as happening at 

 their proper period, and of courfe being well-timed. " Quam 

 " tempeftivos- autem dedit, quam falutares non modo hominum, 

 " fed etiam pecudum generi, iis denique omnibus quse oriun- 

 " tur ex terra, ventos etefios ? Quorum fiatu nimii temperantur 

 u calores *."— " Ego vero propter fermonis deleclationem tern- 

 " pejiivis quoque conviviis delectorf." 



Et tempejlivum pueris concedere ludum %. 



Navis, ratis, cymba, scapha, linter, agree in de- 

 noting a machine for conveying both perfons and the fubjecls 

 of trade by water from one place to another, but differ in re- 

 fpecl to the iize or the conftruclion of that fpecies, to which 

 each can be properly applied. The firft indeed is a generic 

 term, applicable to a vefTel of any kind, of whatever dimenfions, 

 or however formed. 



Navem agere ignarus navis timet §. 



The poet has here no intention to fpecify the kind of fliip, as 

 the danger from ignorance is the fame in all kinds. " Confi- 

 " cit optime curfum navis, quae fcientiflimo gubernatore uti- 

 " tur**." 



The generality of the term navis is often limited by the ap- 

 plication of adjectives, which mark the ufe of particular fpe- 

 cies ; as, Navis longa, marina, fiuviatilis, pifcatoria, oneraria, 

 actuaria) &c. 



Ratis differs from navis in denoting the rudeft vehicle to 

 which a perfon can commit himfelf on water. The poets fome- 



times 



* Cic. N. D. 52. b. § Hor. Ep. 2. I. 114. 



f Cic. de Sen. 14. ** Cic. in Ver. 244. b. 



% Hor. Ep. 2. 2. 142. 



