hae 
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Biographical Notice of Hey. 365 
ences, but he had attended ‘the ‘course of Brisson in the 
college at Navarre, and acquired some taste for e exper- 
imental physics. Among his new confreres in the college 
ef Lemoine was Lhomond, a man of profound Se 
and yet more modest and pious than he was learned. 
person had limited himself to the instruction of the sixth, 
and had composed works only for Children ; but they were 
remarkable for an uncommon clearness, and a simplicity — 
of tone conformable to the character of the author. 
— 
science, and felt for him the tenderness of ason. He took 
eare of his business, comforted him in his sufferings, and 
accompanied him in his walks. Lbomond loved to her- 
borize, but Haiiy had yet no idea of botany. The indus- 
trious friendship of the young professor enabled him to fill 
up, ina very short time, this blank in his information, in 
order that he might be more agreeable and useful to his 
friend. At the first herborization, he could name the plants, 
and assign them their botanical characters; very soon he 
was on a level with his companion, and from that time eve- 
ry ay was common between them, even to their amuse- 
men 
The College of Cardinal Lemoine is near the Garden of 
Plants; and it was natural that Haiiy should often choose 
it for his promenade. Seeing one day a crowd of auditors 
pressing in to the attendance of a lecture of Daubenton, on 
mineralogy, he wished to hear this professor, and was char- 
med to find, in this part of natural history, subjects of the- 
ory more analogous to his taste for the physical sciences, 
than the pursuits of botany. e comparison of two 
varieties of the productions of nature, excited in his mind 
a train of reflections which led the way to his discoveries in 
crystallography. How is it, said he, that the same stonesan 
the same salts should show themselves in cubes, in prisms, in 
needles, without the change of asingle atom in theit composi- 
tion, while the rose has always the same petals, the gland the — 
the same height and developement? 
house en 
wkwardly, though luckily, let fall a beautiful group of 
Wismatic crystals of calcareous spar. Some fragments 
oe 
