ON THE 
2 J a gy i it Us gt as 
By DOMINIQUE ALBERT, LL.D. 
Communicated by Mr. Joun Davies, M.W.S. (Read March 
5th, 1839.) 
The Prince de Rohan, a relative of the Royal 
Family of France, having retired from the court 
since the accession of his kinsman, Louis Philippe, 
turned his attention to the improvement of agri- 
cultural industry on his estate, situated in the 
Jura, on the limits of France and Switzerland : 
there the Prince produced for the first time, in 
1831, apotatoe extraordinary as to size and weight. 
By what means or process this monstrous tuber- 
cula made its appearance, remains yet a secret 
beyond the gardens of the Prince ; however, the 
author of this interesting natural production, has 
given some of its seed to several of his friends, 
with the following particulars :— 
