284 GENERAL LITERATURE, &C. 



The characters of the genus will include all the 

 properties common to the species. 



And in the description of a species, it will only be 

 necessary to enumerate those modifications of charac- 

 ter which constitute the peculiarities of the vital prin- 

 ciple. 



In zoology, species alone are permanent, all the 

 others being subject to change. 



Eras. 



The practice of counting by the years of our 

 Christ, was only introduced into Italy during the 

 sixth century ; and in the north of Europe, towards 

 the eighth century, under Charlemagne, the Grego- 

 rian reformation of the Calendar took place on the 

 4th of October, 1582 ; the reform of the calendar in 

 England, on the 29th of March, 1752. 



Confucius. 



Confucius lived about five hundred years before 

 the Christian era, near the age of Cyrus, Pythagoras, 

 and Solon; about 1000 years after Moses, and 500 

 after King David. 



Hypothesis. 



These are sometimes of great utility in assisting us 

 to generalize and retain in the memory a number of 

 particular facts, which would otherwise be insulated. 



Imputations. 



The imputation of unavowed intentions to an ad- 

 versary is not only one of the most vulgar, but also 

 one of the most dangerous arts of controversy. 



What private individuals write should not be im- 



