H.I.H. PRINCE ROLAND BONAPARTE died on April 15 last; he was a conspicuous scientific figure, and by his death we have lost a generous promoter of progress in science as well as a contributor himself to natural knowledge. Born at Auteuil, near Paris, in 1858, Roland-Napoleon was the son of Pierre-Napoleon Bonaparte and grandson of Lucien, second brother of Napoleon I. After having been a brilliant pupil of the Lycee St. Louis, he entered the military school of St. Cyr, and two years after he was appointed second-lieutenant. Although he had, as well as his father, throughout his life given many proofs of his respect for the republican form of government, he was compelled to retire from the army by the Act of June 22, 1886, which prohibited all members of families having reigned in France from being soldiers.