For pulleys, gear wheels, or other standard parts of machinery which are not likely to be modified or changed, iron patterns are preferable; patterns for gear wheels and pulleys, when made of wood, aside from their liability to spring and warp, cannot be made sufficiently strong to withstand foundry use; besides, the greatest accuracy that can be attained, even by metal patterns, is far from producing true castings, especially for tooth wheels. The more perfect patterns are, the less rapping is required in drawing them; and the less rapping done, the more perfect castings will be.
It has been mentioned that Carneades was the head of the Academic school. In that capacity, he was the lineal inheritor of Platos teaching. Yet a public apology for injustice, even when balanced by a previous panegyric on its opposite, might seem to be of all lessons the most alien from Platonism; and in a State governed by Platos own laws, it would certainly have been punishable with death. To explain this anomaly is to relate the history of Greek scepticism, which is what we shall now attempt to do.
ONE:"The houses caught fire from burning benzine, and the flames burst out in other quarters also. On Wednesday afternoon part of the town and the northern suburb were in flames."Mr. Everdail didnt go with her, guessed Larry.
ONE:On passing from Seneca to Epicttus, we find that the religious element has received a considerable accession of strength, so considerable, indeed, that the simple progress of time will not altogether account for it. Something is due to the superior devoutness of the Eastern mindEpicttus was a Phrygian,and still more to the difference in station between the two philosophers. As a noble, Seneca belonged to the class which was naturally most inclined to adopt an independent attitude towards the popular beliefs; as a slave, Epicttus belonged to the class which was naturally most amenable to their authority. It was, however, no accident that philosophy should, at a distance of only a generation, be represented by two such widely contrasted individuals; for the whole tendency of Roman civilisation was, as we have seen, to bring the Oriental element and the servile element of society into ever-increasing prominence. Nothing proves the ascendency of religious considerations in the mind of Epicttus more strongly than his aversion from the physical enquiries which were eagerly prosecuted by Seneca. Nature interests him solely as a manifestation of divine wisdom and goodness. As a consequence of this intensified religious feeling, the Stoic theory of natural law is transformed, with Epicttus, into an expression of filial submission to the divine will, while the Stoic teleology becomes an enumeration of the blessings showered by providence on man. In the latter respect, his standpoint approaches very near to that of Socrates, who, although a free-born Athenian citizen, belonged, like him, to the poorer classes, and sympathised deeply with their feeling of dependence on supernatural protection,a remark which also applies to the humble day-labourer244 Cleanthes. Epicttus also shares the idea, characteristic of the Platonic rather than of the Xenophontic Socrates, that the philosopher is entrusted with a mission from God, without which it would be perilous for him to undertake the office of a teacher, and which, in the discharge of that office, he should keep constantly before his eyes. But the dialectical element which with Socrates had furnished so strong a counterpoise to the authoritative and traditional side of his philosophy, is almost entirely wanting in the discourses of his imitator, and the little of it which he admits is valued only as a means of silencing the Sceptics. On the other hand, the weakness and insignificance of human nature, considered on the individual side, are abundantly illustrated, and contemptuous diminutives are habitually used in speaking of its component parts.378 It would seem that the attitude of prostration before an overwhelming external authority prevented Epicttus from looking very favourably on the doctrine of individual immortality; and even if he accepted that doctrine, which seems in the highest degree improbable, it held a much less important place in his thoughts than in those of Cicero and Seneca. It would seem, also, that the Stoic materialism was betraying its fundamental incompatibility with a hope originally borrowed from the idealism of Plato. Nor was this renunciation inconsistent with the ethical dualism which drew a sharp line of distinction between flesh and spirit in the constitution of man, for the superiority of the spirit arose from its identity with the divine substance into which it was destined to be reabsorbed after death.379
TWO:Standard gauging implements were introduced about the year 1840, by the celebrated Swiss engineer, John G. Bodmer, a [148]man who for many reasons deserves to be considered as the founder of machine tool manufacture. He not only employed gauges in his works to secure duplicate dimensions, but also invented and put in use many other reforms in manipulation; among these may be mentioned the decimal or metrical division of measures, a system of detail drawings classified by symbols, the mode of calculating wheels by diametric pitch, with many other things which characterise the best modern practice."Paste?" Lalage gasped. "Paste! Why for their sake--impossible!"
TWO:"More than one hundred houses have been burned or wrecked at Namur, among them the town-hall, the house at the Namur Citadel, and the Institution for ophthalmology in the Place Lopold. In the Grand March and its neighbourhood about sixty have been destroyed by fire. If we add to this the damage done by the bombardment from Friday the 21st until Sunday the 23rd August, and the wrecking of the bridges after the retreat of the army, we may estimate the losses at 10,000,000 francs."It is possible," she cried aloud. "Fool not to have thought of it before. What better hiding-place could I have than in the Corner House!"
TWO:In ages past, various attempts were made to find some constant in nature on which measures could be based. Some of these attempts were ludicrous, and all of them failures, until the vibrations of a pendulum connected length and space with time. The problem was then more easy. The changes of seasons and the movement of heavenly bodies had established measures of time, so that days, hours, and minutes became constants, proved and maintained by the unerring laws of nature.There was a time when mortals lived like brutes
THREE:"I wish I had known," she murmured. "Oh, I wish I had known."Civil engineering, in the meaning assumed for the term, has become almost a pure mathematical science. Constants are proved and established for nearly every computation; the strength and durability of materials, from long and repeated tests, has come to be well understood; and as in the case of machine tools, the uniformity of practice among civil engineers, and the perfection of their works, attest how far civil engineering has become a true science, and proves that the principles involved in the construction of permanent works are well understood.
