JOHN PARK, M. D., died in Worcester, Massachusetts, on the 2d of March, aged seventy-eight. He was an active member of the old Federal party in Massachusetts, during the administration of Jefferson and Madison, and exerted a wide and important influence by his well-known journal, _The Boston Repertory_. At a subsequent period, he established a private school for young women, which acquired a celebrity second to that of no similar educational institution in the old Commonwealth. He was distinguished for his cultivated literary tastes, his uncommon purity of character, his fine social qualities, and his cordial and attractive manners. Dr. Park was the father of Mrs. L. G. Hall, wife of the Rev. Dr. Hall, of Providence, the authoress of _Miriam_, and other successful productions, and of Mr. John C. Park, an eminent lawyer in Boston. Mrs. Osgood and several other distinguished literary women were among his pupils. * * * * * WILLIAM THOMPSON, of Belfast, the naturalist of Ireland, died in London on the 17th February. Mr. Thompson was born in 1805, and from earliest youth was attached to scientific and literary studies. For the last fifteen years his name has been before the world of science in connection with arduous researches on the natural history of Ireland. The numerous memoirs published by him, chiefly in scientific periodicals, and latterly in the _Annals of Natural History_, of which he was a warm supporter, extend in their subjects over all departments of zoology, and several are devoted to botanical investigations. He was constantly on the watch for new facts bearing on the natural history of his native island, which could boast of no more truly patriotic son. At the meeting of the British Association, at Cork, he read an elaborate report on the _Fauna of Ireland_, since published _in extenso_ in the Association _Transactions_; and it was his intention to communicate a continuation of that report at the Belfast meeting. He did not confine his inquiries to Irish subjects, but added considerably to the natural history of several parts of England and Scotland; and when Professor Forbes proceeded to the Ægean at the invitation of Captain Graves, Mr. Thompson, himself an intimate friend of that distinguished officer, accompanied him, and devoted the short time he was in the Archipelago to zoological observations, since published, chiefly on the migration of birds. His love of ornithology was intense, and the results of his labors in that department are narrated with charming details in the volumes that have been published of his great work on _The Natural History of Ireland_. His name is associated with many discoveries, and numerous species of new creatures have been named after him. His reputation stood equally high on the Continent and in America, and he had been elected an honorary member of several foreign societies. He numbered among his intimate friends and correspondents all the eminent