=B.C. 341.=--Æneas, the tactician, believed to be the same Æneas of Stymphale alluded to by Xenophon, invented a singular method of telegraphing phrases commonly used, especially in war. These were written upon exactly similar oblong boards placed at the dispatching and receiving stations, where they stood upon floats in vessels of water. At a given signal the water was allowed to flow out of the vessel at each station, and, when the desired phrase on the board had reached the level of the vessel, another signal was made so that the outflow could be stopped and the desired signal read at the receiving station. REFERENCES.--Laurencin, “Le Télégraphe,” Chap. I; “Penny Encycl.,” Vol. XXIV. p. 145; “Michaud Bio.,” Paris, 1855, Vol. XII. pp. 459–460. =B.C. 337–330.=--From the well-known work by Mme. Blavatsky (“Isis Unveiled,” New York, 1877) the following curious extracts are made regarding “The Ether or Astral Light” (Vol. I. chap. v. pp. 125–162): “There has been an infinite confusion of names to express one and the same thing, amongst others, the Hermes-fire, the lightning of Cybelè, the nerve-aura and the fluid of the magnetists, the od of Reichenbach, the fire-globe, or meteor-_cat_ of Babinet, the physic force of Sergeant Cox and Mr. Crookes, the atmospheric magnetism of some naturalists, galvanism, and finally, electricity, which are but various names for many different manifestations or effects of the same all-pervading causes--the Greek Archeus....” Only in connection with these _discoveries_ (Edison’s Force and Graham Bell’s Telephone, which may unsettle, if not utterly upset all our ideas of the imponderable fluids) we may perhaps well remind our readers of the many hints to be found in the ancient histories as to a certain secret in the possession of the Egyptian priesthood, who could instantly communicate, during the celebration of the Mysteries, from one temple to another, even though the former were at Thebes and the latter at the other end of the country; the legends attributing it, as a matter of course, to the “invisible tribes” of the air which carry messages for mortals. The author of “Pre-Adamite Man” (P. B. Randolph, at p. 48) quotes an instance, which, being merely given on his own authority, and he seeming uncertain whether the story comes from Macrinus or some other writer, may be taken for what it is worth. He found good evidence, he says, during his stay in Egypt, that one of the Cleopatras actually sent news by a wire to all of the cities from Heliopolis (the magnificent chief seat of sun-worship) to the island of Elephantine, on the Upper Nile. Further on, Mme. Blavatsky thus alludes to the loadstone: