Part 9

Archimedes is said to have obtained the friendship and confidence of Hiero by the following incident. The king had delivered a certain weight of gold to a workman, to be made into a crown. When the crown was made and sent to the king, a suspicion arose in the royal mind that the gold had been adulterated by the alloy of a baser metal, and he applied to Archimedes for his assistance in detecting the imposture; the difficulty was to measure the bulk of the crown without melting it into a regular figure; for silver being, weight for weight, of greater bulk than gold, any alloy of the former in place of an equal weight of the latter would necessarily increase the bulk of the crown; and at that time there was no known means of testing the purity of metal. Archimedes, after many unsuccessful attempts, was about to abandon the subject altogether, when the following circumstance suggested to his discerning and prepared mind a train of thought which led to the solution of the difficulty. Stepping into his bath one day, as was his custom, his mind doubtless fixed on the object of his research, he chanced to observe that, the bath being full, a quantity of water of the same bulk as his body must flow over before he could immerse himself. He probably perceived that any other body of the same bulk would have raised the water equally; but that another body of the same weight, but less bulky, would not have produced so great an effect. In the words of Vitruvius, "as soon as he had hit upon this method of detection, he did not wait a moment, but jumped joyfully out of the bath, and running forthwith toward his own house, called out with a loud voice that he had found what he sought. For as he ran he called out, in Greek, 'Eureka! Eureka!--I have found it! I have found it!'" When his emotion had sobered down, he proceeded to investigate the subject calmly. He procured two masses of metal, each of equal weight with the crown--one of gold and the other of silver--and having filled a vessel very accurately with water, he plunged into it the silver, and marked the exact quantity of water that overflowed. He then treated the gold in the same manner, and observed that a less quantity of water overflowed than before. He next plunged the crown into the same vessel full of water, and observed that it displaced more of the fluid than the gold had done, and less than the silver; by which he inferred that the crown was neither pure gold nor pure silver, but a mixture of both. Hiero was so gratified with this result as to declare that from that moment he could never refuse to believe anything Archimedes told him.

Travelling in Egypt, and observing the necessity of raising the water of the Nile to points which the river did not reach, as well as the difficulty of clearing the land from the periodical overflowings of the Nile, Archimedes invented for this purpose the screw which bears his name. It was likewise used as a pump to clear water from the holds of vessels; and the name of Archimedes was held in great veneration by seamen on this account. The screw may be briefly described as a long spiral with its lower extremity immersed in the water, which, rising along the channels by the revolution of the machine on its axis, is discharged at the upper extremity. When applied to the propulsion of steam-vessels the screw is horizontal; and being put in motion by a steam-engine, drives the water backward, when its reaction, or return, propels the vessel.

The mechanical ingenuity of Archimedes was next displayed in the various machines which he constructed for the defence of Syracuse during a three years' siege by the Romans. Among these inventions were catapults for throwing arrows, and ballistae for throwing masses of stone; and iron hands or hooks attached to chains, thrown to catch the prows of the enemy's vessels, and then overturn them. He is likewise stated to have set their vessels on fire by burning-glasses; this, however, rests upon modern authority, and Archimedes is rather believed to have set the ships on fire by machines for throwing lighted materials.

After the storming of Syracuse, Archimedes was killed by a Roman soldier, who did not know who he was. The soldier inquired, but the philosopher, being intent upon a problem, begged that his diagram might not be disturbed; upon which the soldier put him to death. At his own request, expressed during his life, a sphere inscribed in a cylinder was sculptured on his tomb, in memory of his discovery that the solid contents of a sphere is exactly two-thirds of that of the circumscribing cylinder; and by this means the memorial was afterward identified. One hundred and fifty years after the death of Archimedes, when Cicero was residing in Sicily, he paid homage to his forgotten tomb. "During my quaestorship," says this illustrious Roman, "I diligently sought to discover the sepulchre of Archimedes, which the Syracusans had totally neglected, and suffered to be grown over with thorns and briars. Recollecting some verses, said to be inscribed on the tomb, which mentioned that on the top was placed a sphere with a cylinder, I looked round me upon every object at the Agragentine Gate, the common receptacle of the dead. At last I observed a little column which just rose above the thorns, upon which was placed the figure of a sphere and cylinder. This, said I to the Syracusan nobles who were with me, this must, I think, be what I am seeking. Several persons were immediately employed to clear away the weeds and lay open the spot. As soon as a passage was opened, we drew near, and found on the opposite base the inscription, with nearly half the latter part of the verses worn away. Thus would this most famous, and formerly most learned, city of Greece have remained a stranger to the tomb of one of its most ingenious citizens, had it not been discovered by a man of Arpinum."

To Archimedes is attributed the apophthegm: "Give me a lever long enough, and a prop strong enough, and with my own weight I will move the world." This arose from his knowledge of the possible effects of machinery; but however it might astonish a Greek of his day, it would now be admitted to be as theoretically possible as it is practically impossible. Archimedes would have required to move with the velocity of a cannon-ball for millions of ages to alter the position of the earth by the smallest part of an inch. In mathematical truth, however, the feat is performed by every man who leaps from the ground; for he kicks the world away when he rises, and attracts it again when he falls back.

Under the superintendence of Archimedes was also built the renowned galley for Hiero. It was constructed to half its height, by three hundred master workmen and their servants, in six months. Hiero then directed that the vessel should be perfected afloat; but how to get the vast pile into the water the builders knew not, till Archimedes invented his engine called the helix, by which, with the assistance of very few hands he drew the ship into the sea, where it was completed in six months. The ship consumed wood enough to build sixty large galleys; it had twenty tiers of bars and three decks; the middle deck had on each side fifteen dining apartments besides other chambers, luxuriously furnished, and floors paved with mosaics of the story of the "Iliad." On the upper deck were gardens with arbors of ivy and vines; and here was a temple of Venus, paved with agates, and roofed with Cyprus-wood; it was richly adorned with pictures and statues, and furnished with couches and drinking-vessels. Adjoining was an apartment of box-wood, with a clock in the ceiling, in imitation of the great dial of Syracuse; and here was a huge bath set with gems called Tauromenites. There were also on each side of this deck, cabins for the marine soldiers, and twenty stables for horses; in the forecastle was a fresh-water cistern which held 253 hogsheads; and near it was a large tank of sea-water, in which fish were kept. From the ship's sides projected ovens, kitchens, mills, and other offices, built upon beams, each supported by a carved image nine feet high. Around the deck were eight wooden towers, from each of which was raised a breastwork full of loopholes, whence an enemy might be annoyed with stones each tower being guarded by four armed soldiers and two archers. On this upper deck was also placed the machine invented by Archimedes to fling stones of 300 pounds weight and darts eighteen feet long, to the distance of 120 paces; while each of the three masts had two engines for throwing stones. The ship was furnished with four anchors of wood and eight of iron; and "the water-screw" of Archimedes, already mentioned, was used instead of a pump for the vast ship; "by the help of which one man might easily and speedily drain out the water, though it were very deep." The whole ship's company consisted of an immense multitude, there being in the forecastle alone 600 seamen. There were placed on board her 60,000 bushels of corn, 10,000 barrels of salt fish, and 20,000 barrels of flesh, besides the provisions for her company. She was first called the Syracuse, but afterward the Alexandria. The builder was Archias, the Corinthian shipwright. The vessel appears to have been armed for war and sumptuously fitted for a pleasure-yacht, yet was ultimately used to carry corn. The timber for the main mast, after being in vain sought for in Italy, was brought from England. The dimensions are not recorded, but they must have exceeded those of any ship of the present day; indeed, Hiero, finding that none of the surrounding harbors sufficed to receive his vast ship, loaded it with corn and presented the vessel with its cargo to Ptolemy, King of Egypt, and on arriving at Alexandria it was hauled ashore, and nothing more is recorded respecting it. A most elaborate description of this vast ship has been preserved to us by Athenaeus, and translated into English by Burchett, in his "Naval Transactions."

Archimedes has been styled the Homer of geometry; yet it must not be concealed that he fell into the prevailing error of the ancient philosophers--that geometry was degraded by being employed to produce anything useful. "It was with difficulty," says Lord Macaulay, "that he was induced to stoop from speculation to practice. He was half ashamed of those inventions which were the wonder of hostile nations, and always spoke of them slightingly, as mere amusements, as trifles in which a mathematician might be suffered to relax his mind after intense application to the higher parts of his science."

MARCUS TULLIUS CICERO

By REV. W. J. BRODRIBB

(106-43 B.C.)

Marcus Tullius Cicero, the foremost orator of ancient Rome, one of her leading statesmen, and the most brilliant and accomplished of her men of letters, lived in those stirring later days of the Roman republic, that age of revolution and civil wars, in which an old and decaying order of things was passing away. It was the age of great and daring spirits, of Catiline, Caesar, Pompey, Antony, with whose history Cicero's life is so closely intertwined.

Born 106 B.C., at an old Italian town, Arpinum in Latium, of a good family, and inheriting from his father, who was a man of considerable culture, a moderate estate, he went as a boy to Rome, and there, under the best teachers and professors, he learned law and oratory, Greek philosophy, and Greek literature, acquiring in fact the universal knowledge which he himself says in his essay "On the Orator" (De Oratore), an orator ought to possess. An orator in the ancient world, we should bear in mind, was first and chiefly a pleader of causes, causes both legal and political--speaker alike, as we should say, at the bar and in parliament. Hence the necessity for knowledge and information of every kind. Cicero's first important speech, in his twenty-sixth year, was the successful defence in a criminal trial of a client against one of the favorites of the all-powerful Sulla, then dictator. After a visit to Athens, and a tour in Asia Minor, where he profited by the society of eminent professors of rhetoric and men of letters, he returned to Rome, and at thirty years of age he was in the highest repute at the Roman bar.

In 76 B.C., having been elected quaestor (a financial secretary, as we may say) by a unanimous popular vote, he held an appointment in Sicily, where he won the good opinion of two highly important interests, apt at times to conflict, the traders and the revenue collectors. To this he owed the glory of his successful impeachment of the infamous Verres, in 70 B.C., which he undertook at the request of the Sicilian provincials. The bad man who had so hideously misgoverned them, felt himself crushed by Cicero's opening speech, and went into voluntary exile. Cicero was now a power in the state, and his rise up the official ladder was sure and rapid; in 66 B.C. he was praetor, and supported in a great political speech (Pro Lege Manilia) the appointment of Pompey to the conduct of the war with Mithridates, which in fact carried with it the supreme control of Asia and of the East. In 63 B.C., at the age of forty-four, he was consul, the highest dignity attainable to a Roman; in that memorable year he foiled by a bold promptitude, the revolutionary plot of Catiline, in which many distinguished Romans--Caesar it was even said among them--were implicated. He was now at the height of his fame; "father of his country" he was actually called, for a brief space he was with all classes the great man of the day. But the tide soon turned; Cicero might have saved the country, but in saving it, it was said he had violated the constitution, according to which a Roman citizen could not be capitally punished but by the sentence of the people in regular assembly. As it was, Roman citizens guilty of complicity with Catiline had, at Cicero's instigation, been put to death simply by an order of the senate; this, it was said, was a dangerous precedent and Cicero must be held responsible for it. His bitter enemy, Clodius, now tribune, pressed the charge against him in inflammatory speeches specially addressed to the lowest class of citizens, and Cicero in despair left Rome in 58 B.C., and took refuge at Thessalonica. That same year saw the "father of his country" condemned to exile by a vote of the Roman people, and his house at Rome and his country houses at Formiae and Tusculum plundered and ruined.

But in those revolutionary days the events of one year were reversed by those of the next; in 57 B.C., with new counsels and new tribunes, the people almost unanimously voted the recall of the exile, and Cicero was welcomed back to Rome amid an outburst of popular enthusiasm. But he was no longer a power in the world of politics; he could not see his way clearly; and he was so nervously sensitive to the fluctuations of public opinion that he could not decide between Pompey and the aristocracy on the one hand, and Caesar and the new democracy on the other. His leanings had hitherto been toward Pompey and the senate and the old republic; but as time went on, he felt that Pompey was a half-hearted man, who could not be trusted, and that he would have ultimately to succumb to his far abler and more far-sighted rival, Caesar. The result was that he lost the esteem of both parties, and came to be regarded as a mere trimmer and time-server. There was all that political indecision about him which may be often observed in eminent lawyers and men of letters. The age wanted strong men such as Caesar; this Cicero certainly was not. He was gentle, amiable, very clever, and highly cultivated, but the last man in the world to succeed in politics. The later years of his life were spent chiefly in pleading at the bar and writing essays. In 52 B.C. he composed one of his finest speeches in defence of Milo, who had killed Clodius in a riot, and was then standing for the consulship; in this he was acting quite against the wishes of Pompey. In the following years (51-50 B.C.) he was in Asia, as governor of the province of Cilicia, and here the best side of his character showed itself in his just and sympathetic treatment of the provincials. In 49-48 B.C. he was with Pompey's army in Greece to fight for the old cause, of which, however, he well-nigh despaired, and after the decisive battle of Pharsalia, at which he was not present, he threw himself on the conqueror's mercy. Caesar, who had certainly nothing to fear from him, received him kindly, and was a great friend to him from that day; but Cicero was not a happy man now that he could no longer make speeches in the senate or in the courts; to all this Caesar's victory had for the time at least put at end. In the years 46, 45, 44 B.C., he wrote most of his chief works on rhetoric and philosophy, living in retirement and brooding mournfully over his griefs and disappointments. In 43 B.C., the year after Caesar's death, he had once again the delight of having his eloquence applauded by the senate. In that year his famous speeches against Antony--Philippics, as he called them after the title of Demosthenes's orations against Philip of Macedon--were delivered. These cost him his life. As soon as Antony, Octavius (afterward the Emperor Augustus), and Lepidus had leagued themselves together in the so-called triumvirate for the settlement of the state, they followed the precedent of former revolutions, a proscription-list of their political enemies. All such were outlawed and given up to destruction. Cicero's name was in the fatal list. Old and feeble, he fled to his villa at Formiae, pursued by the soldiers of Antony, and was overtaken by them as he was being carried in a litter down to the shore, where it had been his intention to embark. With a calm courage (which, to quote Macaulay's words) "has half redeemed his fame," he put his head out of the litter and bade his murderers strike. He died in the December of 43 B.C., in the sixty-third year of his age.

As an orator and a pleader Cicero undoubtedly stands in the first rank. Many of his speeches have come down to us. Of these the most famous, and perhaps the finest, are his speeches against Verres and against Catiline. Eloquence in those days of furious faction and revolution was a greater force than it is with us. As a politician he failed because he did not distinctly realize to himself that the old republic, the government of the senate and of the nobles, had been tried and had been found wanting. He had not the courage to face the great changes which he felt were impending. Pompey, the champion of the old order, was not a leader to whom he could look up with confidence. And so he wavered, and half acquiesced in Caesar's triumph, even though he suspected that with that triumph the Rome which he had known and loved would pass away. To us it is as an essayist and as the writer of a multitude of letters to friends, full of miscellaneous information, that Cicero is particularly attractive; there is a gracefulness and refinement and elevation of tone about his writings which cannot fail to incline the reader to say with Erasmus, "I feel a better man for reading Cicero." His essays on "Old Age" and "on Friendship," his De Officiis or "Whole Duty of Man," as we may paraphrase it, are good and pleasant reading such as we can all enjoy. There is no fairer picture in literature than of him sitting in the garden of his villa at Tusculum, surrounded by admiring friends, and engaged upon his "Tusculan disputations;" while his treatises on the "Nature of the Gods," and on the "True Ends of Human Life" (De Finibus), if they do not show any very deep and original thought, at least give us an insight into the teachings of the various philosophical schools.

AUGUSTUS CAESAR

(63 B.C.-14 A.D.)

Caius Julius Caesar Octavianus Augustus, son of Caius Octavius and Atia (Julius Caesar's niece), was born in 63 B.C. He was the first and greatest of the Roman emperors, in his way perhaps fully as great as his adoptive father, Julius Caesar. The Octavian family came originally from Velitrae, in the country of the Volsci; and the branch to which Augustus belonged was rich and honorable. His father had risen to the rank of senator and praetor, but died in the prime of life, when Augustus was only four years old. Augustus was carefully educated in Rome under the guardianship of his mother and his step-father; and his talents recommended him to his great-uncle, Julius Caesar, who adopted him as his son and heir. At the time of Caesar's assassination (44 B.C.), Augustus was a student under the celebrated orator Apollodorus, at Apollonia in Illyricum, whither, however, he had been sent chiefly to gain practical instruction in military affairs. He returned to Italy, and now first learning that he was his uncle's heir, assumed the name of Julius Caesar Octavianus. The soldiers at Brundusium saluted him as Caesar, but he declined their offers, and entered Rome almost alone. The city was at this time divided between the republicans and the friends of Mark Antony, but the latter, by adroit manoeuvres, had gained the ascendency, and enjoyed almost absolute power. At first, Augustus was haughtily treated by Antony, who refused to surrender Caesar's property; but after some fighting, in which Antony was worsted and forced to flee across the Alps, Augustus, who had made himself a favorite with the people and the army, obtained the consulship and carried out Caesar's will. He found an able advocate in Cicero, who at first had regarded him with contempt. To himself the great orator seemed to be laboring in behalf of the republic, whereas he really was only an instrument for raising Augustus to supreme power. When Antony returned from Gaul with Lepidus, Augustus threw off the republican mask, and joined them in establishing a triumvirate. He obtained Africa, Sardinia, and Sicily; Antony, Gaul; and Lepidus, Spain. Their power was soon made absolute by the massacre of those unfriendly to them in Italy, and by the victory at Philippi over the republicans under Brutus and Cassius. The Perusian war, excited by Fulvia, wife of Antony, seemed likely to lead to a contest between Augustus and his rival; but was ended by Fulvia's death, and the subsequent marriage of Antony with Octavia, sister of Augustus. Shortly afterward the Roman world was divided anew, Augustus taking the western half, and Antony the eastern. The contest for supremacy commenced. While Antony was lost in luxurious dissipation at the court of Cleopatra, Augustus was industriously striving to gain the love and confidence of the Roman people, and to damage his rival in public estimation. War was at length declared against the Egyptian queen, and at the naval battle of Actium (31 B.C.) Augustus was victorious, and became sole ruler of the whole Roman world. Antony soon afterward ended his life by suicide; and Cleopatra, learning of his death and believing that Augustus intended carrying her in chains to Rome, also killed herself, so that Augustus triumphed only over her dead body, which he found awaiting him. Antony's son by Fulvia, and Caesarion, son of Caesar and Cleopatra, were put to death; and in 29 B.C., after regulating affairs in Egypt, Greece, Syria, and Asia Minor, Augustus returned to Rome in triumph, and, closing the temple of Janus, proclaimed universal peace.