Note 50 — Art. IV. On the Tourmalines and other Minerals found at Chesterfield and Goshen, Massachusetts.

If this memoir should ever meet the eye of this amiable man, I trust he will excuse the notice to which his labours so justly entitle him. To him we are indebted for a complete science of crystallography, and for having determined the existence and limit of species, which mineralogists had not obtained, and chemists could not determine. He has devoted a long life to the improvement of science, and it is his praise, that he has preserved the meekness of religion amidst the most flattering success. Our scientific countrymen, who have visited Paris, have been particularly indebted to him; and this notice is, in their behalf, both the tribute of justice and gratitude.