By the age of six young Johnny indicated that he had the call.

By the time they reach that age, however, Aristotle no longer worries about the evil influence of comedies.

By ancient common law it might be required of all persons above the age of 12, and it was repeatedly used as a test for the disaffected.

By age 8, those who were signing as babies scored an average of twelve points higher on the WISC-III IQ test.

By age three, however, her mother changed her name to Elizabeth Sewall Alcott, after her own mother.

By the age of twenty, Ferdinando I, Duke of Mantua, began commissioning works from him, and he was also employed by local jewelers for figurative designs.

By the help of these discoveries, Angle civilization in the age preceding the invasion of Britannia can be fitted together.

By age 19, Diabelli had already composed several important compositions, including six masses.

By the time of his relatively early death at the age of 51, Erlang created the field of telephone networks analysis.

By the age of 64 after forty years imprisonment ` Abdu ’ l-Bahá was freed by the Young Turks and he and his family began to live in relative safety.

By age 32, Fuller was bankrupt and jobless, living in public, low-income housing in Chicago, Illinois.

By age twenty, she had met and befriended the important, and pivotal, landscape painter of the Barbizon School, Camille Corot, who excelled in figure painting as well.

By the age of four, he was able to play 40 pieces on the piano ; his mother began formally teaching him the next year.

By age 13 Chaplin had fully abandoned education.

By the time Mozart arrived at age 25, in 1781, the dominant styles of Vienna were recognizably connected to the emergence in the 1750s of the early Classical style.

By conceiving a timeless setting — " a vanished age " — and by carefully choosing names that resembled human history, Howard shrewdly avoided the problem of historical anachronisms and the need for lengthy exposition.

By the early 940s Constantine was an old man, perhaps more than 70 years of age.

By 1 July 1933 there were 1, 463 working camps with 250, 000 junior enrollees ( 18 – 25 years of age ), 28, 000 veterans, 14, 000 American Indians, and 25, 000 Locally Enrolled ( or Experienced ) Men ( LEM ).

By the age of Augustus, poets like Virgil closely adhered to the rules of the meter and approached it in a highly rhetorical way, looking for effects that can be exploited in skilled recitation.

By age nine, she was appearing on The Cas Walker Show on both WIVK Radio and WBIR-TV in Knoxville, Tennessee.

By age 16 he had bought his first guitar ( a Harmony acoustic archtop with a sunburst finish ) and begun making contacts in the music business, becoming friends with folk singer Erik Darling, a latter-day member of the Weavers.

By the age of seven, Plato began doing television commercials, reportedly appearing in over 100 spots for companies as diverse as Kentucky Fried Chicken, Dole, and Atlantic Richfield.

By the time Dewey moved to Chicago at the age of thirty-five, he had already published two books on psychology and applied psychology.

By 1952, at the age of 55, Capra effectively retired from Hollywood filmmaking and spent his later years working with Caltech, his alma mater, to produce educational films on science topics.

By the early 20th century, radiometric dating allowed the Earth's age to be estimated at two billion years.

By the end of his life he knew thirteen languages thoroughly and another twenty-eight reasonably well, making him a hyperpolyglot.

By comparison, the Third Army suffered 16, 596 killed, 96, 241 wounded, and 26, 809 missing in action for a total of 139, 646 men, a ratio of enemy to U. S. losses of nearly thirteen to one.

By the time she was thirteen years old, the Langhornes were again a rich family with a sizeable home.

By 1927, Shearer had made a total of thirteen silent films for MGM.

By nineteenth-century standards, thirteen pints of blood taken over the space of a month was a large but not an exceptional quantity.

By special order of Congress, a thirteen star flag is flown 24 hours a day at the Washington Camp Ground, part of the former Middlebrook encampment, in Bridgewater Township.

By early 1995, Norman had been hospitalized thirteen times.

By 1950 North Carolina was served by thirteen Boy Scout councils:

By 1669, a survey revealed that there were thirteen permanent residents of Massacoe.

By age thirteen, Paul was performing semi-professionally as a country-music singer, guitarist and harmonica player.

By the time it was suppressed by Henry VIII in 1536 as part of the dissolution of the monasteries there were only thirteen monks in the community.

By 1971 the Maharishi had completed thirteen world tours and visited 50 countries and held a press conference with American inventor Buckminster Fuller at his first International Symposium on SCI at the university in Amherst, Massachusetts.

By 1685, Southampton was recognized by the Provincial Council as a township, and the lands within its borders had been allocated to thirteen original purchasers: John Luff, John Martin, Robert Pressmore, Richard Wood, John Jones, Mark Betres, John Swift, Enoch Flowers, Joseph Jones, Thomas Groom, Robert Marsh, Thomas Hould and John Gilbert, whose tracts were delineated on a Map of the Improved Part of the Province of Pennsylvania drafted by Thomas Holme, Penn's Surveyor General.

By age thirteen, his father bought him his own trumpet and provided him with private lessons.

By the mid-19th century, Reading had thirteen establishments that manufactured chairs and cabinets.

By mid-1776, a number of ships, ranging up to and including the thirteen frigates approved by Congress, were under construction, but their effectiveness was limited ; they were completely outmatched by the mighty Royal Navy, and nearly all were captured or sunk by 1781.

By the age of thirteen he was orphaned, and went to live with his elder half-brother, John Steele.

By early 1911, an experimental cabinet had thirteen members, nine of whom were Manchus selected from the imperial family.

By 1984 Quebec had offices in ten counties including eight in the United States and three in other Canadian provinces while Ontario had thirteen delegations in seven countries.

By the summer semester 2010, the TUM comprised thirteen faculties with more than 26, 000 students ( about 20 per cent of whom came from abroad ), about 460 professors of both sexes and roughly 8, 500 members of staff.

By the time he was thirteen, he had composed several religious works.

By the time he was thirteen, he would work for two or three hours before going to school, then go back to work after classes.

By adolescence, she had mastered Greek logic, and at age thirteen she was teaching Latin to young children.

By February 1983, just thirteen sex shops remained in Soho.