MEMOIR OF LATREILLE. 51 



left to a young and skilful professor, already ac- 

 customed to supply his place, all the fatigues of in- 

 struction. After so many labours, no one apparently 

 could have had any thing to object. But his deli- 

 cate conscience would not allow him to enjoy all the 

 advantages of a place without filling it. Perhaps 

 also he was not insensible to the glory of this new 

 career of professorship which was opened before 

 him. In order to pursue it with sucesss, he engaged 

 in extensive works, when his health, which had 

 been for a long while much altered, would have re- 

 quired the most absolute repose. Then, also, a new 

 and entire overthrow in the state, which no one had 

 foreseen (not even those by whom it was brought 

 about), gave him a new shock, and all these things 

 combined, at last crushed the energies of a constitu- 

 tion already enfeebled by so much watching and 

 fatigue. I shall here transcribe the last note I re- 

 ceived from him, because nothing can show better 

 the state to which he was reduced when he wrote 

 his last work, and evince his prodigious persever- 

 ance, when he had set himself to the fulfilment of 

 his duties. 



" c In order that my fellow-member and friend, 

 M. Walckenaer, may consult my memoir on Bom- 

 byx, forming part of my Cours sur l'Entomologie, 

 I have had a copy prepared of twenty-three leaves 

 of the first volume of my lectures. This memoir 

 commences at page 94 and terminates at page 115. 

 M. Latreille will afterwards complete the copy. He 

 entreats his confrere to excuse him for the many 



