LECTURES ON MINERALOGY. 265 



" Great Ruler of the earth and skies, 

 A word of thy almighty breath 

 Can sink the world or bid it rise: 

 Thy smile is life, thy frown is death. 



When angry nations rush to arms, 



And rage and noise and tumult reign, 

 And war resounds its dire alarms, 



And slaughter spreads the hostile plains; 



Thy sovereign eye looks calmly down, 

 And marks their course and bounds their power; 



Thy word the angry nations own, 

 And noise and war are heard no more." 



The audience were thrilled with joy. The impressive 

 manner of the President, with a touch of pathos, as he was 

 himself deeply affected, and the following prayer, grate- 

 ful, fervent, and eloquent, produced a powerful effect. 

 The city was illuminated on Monday night, and the people 

 manifested their joy by congratulations and many sportive 

 exhibitions. 



The summer of 1815 found the cabinet fully arranged, 

 and the lectures of that department well systematized and 

 established. I gave elementary mineralogy in a course, 

 generally twelve or fifteen lectures. They were given 

 in the spring, and the geology followed. The private 

 course was also continued, parallel with the public course. 

 The lectures on geology were delivered in the summer, 

 and the lectures relating to both mineralogy and geology 

 were given in the cabinet, which had now become the 

 grand repository of all the specimens in these departments. 



President Dwight, who, from the first, took a deep inter- 

 est in the lectures on these subjects, was now more inter- 

 ested than ever, and was generally present, particularly at 

 the lectures on geology. 



My early friend, Robert Hare, who, ten or twelve years 

 before, led me in chemistry, was now content to follow me 

 in geology, which he had not studied. Having formed a 



