Lanfranc was trained in the legal studies for which northern Italy was then becoming famous, and acquired such proficiency that tradition links him with Irnerius of Bologna as a pioneer in the renaissance of Roman law.
All children between eight and fifteen years of age, and all between fifteen and sixteen years of age who are not regularly employed in some useful or remunerative occupation, must attend the public school all the time it is in session or a private school for the same time unless excused by the city or the county superintendent because of mental or physical disability or because of proficiency in the branches taught in the first eight grades.
Its main object is to perfect the proficiency of players in certain departments of bowls proper.
The superstitious associations of crystal-gazing, as of hypnotism, appear to bar the way to official scientific investigation, and the fluctuating proficiency of the seers, who cannot command success, or determine the causes and conditions of success and failure, tends in the same direction.
In company with his two patrons Gerbert visited Rome, where the pope, hearing of his proficiency in music and astronomy, induced him to remain in Italy, and introduced him to the emperor Otto I.
The rudiments of Latin he obtained at the grammar school of Montrose, after leaving which he learned Greek for two years under Pierre de Marsilliers, a Frenchman whom John Erskine of Dun had induced to settle at Montrose; and such was Melville's proficiency that on going to the university of St Andrews he excited the astonishment of the professors by using the Greek text of Aristotle, which no one else there understood.
Dean's lack of proficiency at mountain climbing left him to make do instead of utilizing a more effective and safer method of descent.
He still continued his yearly experimental contributions to the North American Review, elaborating them with a view as much to ultimate historical proficiency as to immediate literary effect, the essays on Scottish Song (1826), Novel-Writing (1827), Moliere (1828), and Irving's Granada (1829)) belonging to this preparatory period.
The division of tribes in the stone implement stage into two classes, the Palaeolithic or Old Stone Age, and the Neolithic or New Stone Age, according to their proficiency in this most important art furnishes in some respects the best means of determining their rank in general culture.
In China, Egypt and Babylonia, strength and continuity were lent to this native tendency by the influence of a centralized authority; considerable proficiency was attained in the arts of observation; and from millennial stores of accumulated data, empirical rules were deduced by which the scope of prediction was widened and its accuracy enhanced.