P. 137.—“New made kings.” This allusion will be explained by reading the story of Cronos and Zeus on page 77 of THE CHAUTAUQUAN for November. P. 144.—“Sweet Muse-Mother.” See page 73 of “Brief History of Greece.” P. 145.—“Mantic.” Prophetic; derived from the Greek word for prophetic. P. 152.—“Protagonist.” One who fills the leading part in a drama, and hence in any enterprise. P. 153.—“Ettrick Shepherd.” A name given to the Scottish poet, James Hogg. His home was in the Ettrick forest, and when a boy he had been a shepherd. The reference here is to the articles he contributed to the series of papers which appeared in _Blackwood_ between 1822 and 1835, called Noctes Ambrosianæ, and which were principally written by Christopher North. P. 154.—“Sophocles.” In connection with the chapter on Sophocles the following readings may be used: “Classical Writers,” an essay on his life and writings by Campbell; Talfourd’s “History of Greek Literature,” chapter on “The Tragic Poets of Greece;” Symond’s “Studies of the Greek Poets;” _Baptist Quarterly_, Jan. 1877; Mahaffy’s “History of Classical Greek Literature;” Mure’s “Critical History of the Language and Literature of Ancient Greece;” an account of the performance of “Ædipus Tyrannus,” at Harvard in May, 1881, will be found in _The Century_, November, 1881; _Harvard Register_, April, 1881; Boston _Sunday Herald_, March 27, 1881; New York _Evening Post_, April 22, 1881. P. 173.—“Abæan.” From Abæa, a town of Phocis, where stood a very ancient temple and oracle of Apollo. CHEMISTRY. P. 13.—The abbreviations used in the atomic symbols are taken from the Latin or Greek names, and when these differ from the English there seems to be no correspondence between the name of the element and its atomic symbol; as _Au_ for gold. Hydrogen is the lightest form of matter known, and the weight of its atom is taken as the unit of the system of weights. In the table the numbers in the column of atomic weights give the weight of one atom of each substance as compared with one atom of hydrogen. For instance, an atom of aluminum is twenty-seven times as heavy as an atom of hydrogen. A-luˈmi-num; Brōˈmĭne; Caesium (kēˈsi-um); Cerium (seˈri-um); Chlorine (klōˈrĭne); Chrōˈmi-um; Di-dynˈi-um; Erˈbi-um; Fluˈor-ĭne; Gălˈlĭ-um; Hyˈdro-gen; Glu-cinum (glu-sīˈnum); I-ridˈĭ-um; Iˈo-dĭne; Lanˈtha-num; Lithˈĭ-um; Manganese (mangˈa-nezeˌ); Mŏl-yb-dēˈnum; Nī-oˈbi-um; Nīˈtrō-gen; Osˈmi-um; Pal-lāˈdĭ-um; Phosˈphŏ-rus; Platˈĭ-num, or Pla-tīˈnum; Po-tasˈsĭ-um; Rhōˈdĭ-um; Ru-bidˈi-um; Ru-thēˈnĭ-um; Scanˈdĭ-um; Se-lēˈnĭ-um; Strontium (stronˈshĭ-um); Tanˈta-lum; Tel-luˈri-um; Thalˈli-um; Thoˈri-um; Tī-taˈni-um; Tungˈsten; U-rāˈni-um; Va-nāˈdi-um; Yt-terˈbi-um; Zir-cōˈni-um. P. 19.—“Guyten de Morveau,” gwēˈton dĕh morˈvō. (1737-1816.) A French chemist. He suggested a new nomenclature which was adopted by Lavoisier, and wrote a “Dictionary of Chemistry.”