ONE:A bevel square is often convenient, but should be an independent one; a T square that has a movable blade is not suitable for general use. Combinations in draughting instruments, no matter what their character, should be avoided; such combinations, like those in machinery, are generally mistakes, and their effect the reverse of what is intended.
TWO:Such, so far as they can be ascertained, are the most important facts in the life of Plotinus. Interwoven with these, we find some legendary details which vividly illustrate the superstition and credulity of the age. It is evident from his childish talk about the numbers six and nine that Porphyry was imbued with Pythagorean ideas. Accordingly, his whole account of Plotinus is dominated by the wish to represent that philosopher under the guise of a Pythagorean saint. We have already alluded to the manner in which he exalts his heros remarkable sagacity into a power of supernatural prescience and divination. He also tells us, with the most unsuspecting good faith, how a certain Alexandrian philosopher whose jealousy had been excited by the success of his illustrious countryman, endeavoured to draw down the malignant influences of the stars on the head of Plotinus, but was obliged to desist on finding that the attack recoiled on himself.421 On another occasion, an Egyptian priest, by way of exhibiting his skill in magic, offered to conjure up the daemon or guardian spirit of Plotinus. The latter readily consented, and the Temple of Isis was chosen for the scene of the operations, as, according to the Egyptian, no other spot sufficiently pure for the purpose could be found in Rome. The incantations were duly pronounced, when, much to the admiration of those present, a god made his appearance instead of the expected daemon. By what particular marks the divinity of the apparition was determined, Porphyry omits to mention. The philosopher was congratulated by his countryman on the possession of such a distinguished patron, but the celestial visitor vanished before any questions could be put to him. This mishap was attributed to a friend281 who, either from envy or fear, choked the birds which had been given him to hold, and which seem to have played a very important part in the incantation, though what it was, we do not find more particularly specified.422"I remember the transaction perfectly well," he said. "We do a lot of money-changing and that kind of thing, as our foreign connection is a large one. I should not have heeded the matter but for noticing the curious disfigurement of the man's hands."
