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Proeeedings, etc. 135 regretted that the book was not subjected to more careful supervision before going to press, and some, at least, of the palpable errors, such as the following, corrected: P. 26, Micas. The laminm are flexible and elastic. P: 27. Muscovite Micas, very rlch in Magnesia. P. 29, Talc and Steatite. Silica about 62 per cent.,' Magnesia 32 to 33 per cent., Water 48 per cent. * * The base is cleavable. P. 58. The Basalts of the County of Antrim, Ireland, contain Sulphate of Copper in solution, and owe this property, without doubt, to metallic iron intimately mixed. P. 85. Sulphates of Iron and Alumina used as fertilizers.
A very objectionable feature of the work is the insertion of a great number of advertisements, occupying one-fifth of the book, and throwing the index in a position not easy of reference. If purchasers of books must pay for so large an amount of matter not pertinent to the subject, we think all would prefer it in a separate volume. R.
๐ SIMILAR VOLUMES
The year 1959 marked the 135th anniversary of the founding of The Franklin Institute and the 25th year of its fine edifice on the Parkway in Philadelphia. In presenting the Annual Report for 1959, the Board of Managers notes that important progress has been made in fulfilling the promise of the orga