Sylvania Association 25 1843-5. Trumbull Phalanx 13 1844-7. United Germans 2 1827. Venezuelan Experiment 25 1844-6. Warren, Josiah, Time Store &c. 11 1842. Washtenaw Phalanx 1 1843. Wisconsin Phalanx 21 1844-50. Wright, Frances 9 Wilkinson, Jemima, and her Community 5 1780. Yellow Springs Community 1 1825. Zoar 8 1819. On general survey of the matter contained in this index, we may begin to sort it in the following manner: First we will lay aside the antique _religious_ Associations, such as the Dunkers, Moravians, Zoarites, &c. We count at least seven of these, which do not properly belong to the modern socialistic movement, or even to American life. Having their origin in the old world, and most of them in the last century, and remaining without change, they exist only on the outskirts of general society. Next we put out of account the _foreign_ Associations, such as the Brazilian and Venezuelan experiments. With these may be classed those of the Icarians and some others, which, though within the United States, are, or were, really colonies of foreigners. We see six of this sort in the index. Thirdly, we dismiss two or three Spiritualistic attempts that are named in the list; first, because they never attained to the dignity of Associations; and secondly, because they belonged to a later movement than that which Macdonald undertook to record. The social experiments of the Spiritualists should be treated by themselves, as the _sequelae_ of the Fourier excitement of Macdonald's time. The Associations that are left after these exclusions, naturally fall into two groups, viz.; those of the OWEN MOVEMENT, and those of the FOURIER MOVEMENT. Robert Owen came to this country and commenced his experiments in Communism in 1824. This was the beginning of a national excitement, which had a course somewhat like that of a religious revival or a political campaign. This movement seems to have culminated in 1826; and, grouped around or near that year, we find in Macdonald's list, the names of eleven Communities. These were not all strictly Owenite Communities, but probably all owed their birth to the general excitement that followed Owen's labors, and may therefore, properly be classified as belonging to the Owen movement.