TWO:In cutting screws it is best not to refer to that mistaken convenience called a wheel list, usually stamped on some part of engine lathes to aid in selecting wheels. A screw to [127] be cut is to the lead screw on a lathe as the wheel on the screw is to the wheel on the spindle, and every workman should be familiar with so simple a matter as computing wheels for screw cutting, when there is but one train of wheels. Wheels for screw cutting may be computed not only quite as soon as read from an index, but the advantage of being familiar with wheel changes is very important in other cases, and frequently such combinations have to be made when there is not an index at hand.Against these we have to set the confident expressions of belief in a future life employed by all the Platonists and Pythagoreans, and by some of the Stoic school. But their doctrines on the subject will be most advantageously explained when we come to deal with the religious philosophy of the age as a whole. What we have now to examine is the general condition of popular belief as evinced by the character of the funereal monuments erected in the time of the empire. Our authorities are agreed in stating that the majority of these bear witness to a wide-spread and ever-growing faith in immortality, sometimes conveyed under the form of inscriptions, sometimes under that of figured reliefs, sometimes more na?vely signified by articles placed in the tomb for use in another world. I am waiting for my husband, is the inscription placed over his dead wife by one who was, like her, an enfranchised slave. Elsewhere a widow commends her departed husband to the gods of the underworld, and prays that they will allow his spirit to revisit her in the hours of the night.366 In death thou art not dead, are the words deciphered on one mouldering stone. No, says a father to a son whom he had lost in Numidia,236 thou hast not gone down to the abode of the Manes but risen to the stars of heaven. At Doxato, near Philippi in Macedonia, a mother has graven on the tomb of her child: We are crushed by a cruel blow, but thou hast renewed thy being and art dwelling in the Elysian fields.367 This conception of the future world as a heavenly and happy abode where human souls are received into the society of the gods, recurs with especial frequency in the Greek epitaphs, but is also met with in Latin-speaking countries. And, considering how great a part the worship of departed spirits plays in all primitive religions, just such a tendency might be expected to show itself at such a time, if, as we have contended, the conditions of society under the empire were calculated to set free the original forces by which popular faith is created. It seems, therefore, rather arbitrary to assume, as Friedl?nder does,368 that the movement in question was entirely due to Platonic influence,especially considering that there are distinct traces of it to be found in Pindar;although at the same time we may grant that it was powerfully fostered by Platos teaching, and received a fresh impulse from the reconstitution of his philosophy in the third century of our era.
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