218 Biographical Memoir of M. Hauy. 



ing glucifie in the emerald, as he had previously discovered it 

 in the beryl. 



Sometimes these indications resulted from M. Haiiy's re- 

 searches, without his having first perceived them himself, for 

 want of having been at the trouble to compare his results. 

 Thus, when MM. Klaproth and Vauquelin had discovered 

 that the apatite and chrysolite of the jewellers were only phos- 

 phate of iime, he found in his papers that he had long before 

 determined the same structure for both these substances. This 

 agreement between operations performed separately, and which 

 could not have been supposed to have been concerted, was in his 

 eyes the triumph of crystallography. 



It was the duty of a man who thus served the sciences, to de- 

 vote himself entirely to them. By the advice of Lhomond 

 himself, M. Haiiy, when he had served in the university the 

 twenty years; which were then sufficient to obtain the pension 

 d^emerite, hastened to demand it. He joined to it the pro- 

 duce of a small benefice. The whole was just barely sufficient 

 for his subsistence ; but, as he sought no other enjoyments than 

 those afforded by his labours, he would have been satisfied, had 

 he remained in quiet possession of it. Unfortunately he soon 

 learned that the effects of human passions cannot be so easily 

 calculated as those of the powers of nature. 



It will be recollected with what imprudence the Constituent 

 Assembly allowed itself to be induced by narrow minds, to add 

 theological disputes to all the others which agitated France, and 

 thus to double the acrimony of political quarrels, by giving 

 them the character of religious persecutions. The new form of 

 government which was imposed upon the church had divided the 

 clergy, and the men who wished to carry the revolution to the 

 extreme, found pleasure in envenoming this division. The ec- 

 clesiastics who were not inclined to the innovations, were at 

 first attacked in their fortunes ; they were deprived of their 

 places and pensions ; and M. Haliy, whom his scrupulous 

 piety had always retained in this class, saw himself in an instant 

 as poor as when he had the ambition of becoming a singing 

 boy. 



He would still have been contented to have been allowed to 

 live by his labour ; but the persecutors were not satisfied with 



