206 Professor Del Rio on Chrysolite in Obsidian. 



jects for the entertainment of the great variety of visitors of all 

 descriptions, who at one period frequented his house. In his 

 domestic circle, his character appeared in its most amiable light, 

 and by his family he was beloved, and venerated almost to 

 adoration. So uniform and sustained was the tone of his man- 

 ners, and so completely was it the result of the habitual influ- 

 ence of the natural elegance and elevation of his mind on his 

 external demeanour, that when alone with his wife and his chil- 

 dren, it hardly differed by a shade from that which he main- 

 tained in the company of strangers ; for although his fondness, 

 and familiarity, and playfulness were alike engaging and un- 

 restrained, he never lost any thing either of his grace or his 

 dignity : ' Nee vero ille in luce modo, atque in oculis civium 

 magnus, sed intus domique prgestantior." As a writer of the 

 English language, — as a public speaker, — as an original, a pro- 

 found, and a cautious thinker, — as an expounder of truth, — as 

 an instructor of youth, — as an elegant scholar, — as an accom- 

 plished gentleman ; — in the exemplary discharge of the social 

 duties, — in uncompromising consistency and rectitude of prin- 

 ciple, — in unbending independence, — in the warmth and ten- 

 derness of his domestic affections, — in sincere and unostenta- 

 tious piety, — in the purity and innocence of his life, — ^ew have 

 excelled him : and, take him for all in all, it will be difficult 

 to find a man, who, to so many of the perfections, has added 

 so few of the imperfections of human nature." 



Art. II, — Notice respecting the existence of Chrysolite in 

 Obsidian^ as discovered by iProfessor Del Rio, 

 Sir, 

 In the eighth volume of the Ediiiburgh Journal of Science^ * 

 the following article appears under the head of Mineralogy. 



Chrysolite in the cavities of obsidian. — Professor Gustavus 

 Rose of Berlin has found in the cavities of obsidian, in the 

 Jacal Rock, near Real del Monte in Mexico, little crystals, 

 greenish and reddish yellow, and transparent, which belong to 

 the species of prismatic chrysolite. — Poggendorfs Annalen, 

 vol. X. p. 323. 



• No. XV. p. 121. 

 3 



