114 A CONGENIAL RETREAT. 1775, after a visit to the western coast of Africa, he returned to Cayenne ; and during the two years he remained there, occupied himself almost wholly with researches into the natural history of that region. The journal he kept was not published, but is frequently referred to in the works of Buffon. At length Sonnini’s health became impaired. He suffered from an obstinate fever, which preyed upon his spirits and strength, and compelled him to repair to his native country. He found a con- genial retreat at Montbard, where his great friend Buffon gladly welcomed him, and for a short time Sonnini was content to remain tranquil. He tells us, “I spent nearly six months there; and that time, which fled too rapidly, is certainly the period of my life that has left behind it the most grateful recollection. It is to my stay in that abode of the sciences and of taste that I am indebted for the little Lam worth. It was winter, and the severity of the season kept away troublesome visitors. Day succeeded day in delightful succession, while I was aiding the great man in his labours and enjoying his society—a society highly agrecable, and which was never disturbed py the smallest inequality of temper, and which I have never met with anywhere else. Buffon was not one of those men of letters whom Erasmus whimsically compared to the tapcs- try of Flanders, with great figures, which, to pro-