text:  If it was an usher who in spite of all their efforts to exclude him had fairly got admittance into the schoolhouse they set up a sentry-box at his very door in which a rival usher held forth on Cocker and the alphabet; they drew off a few stray boys from the village school and this detachment recruited and reinforced by all the idlers of the neighbourhood to whom mischief was sport was studiously instructed to keep up a perpetual whistling hooting howling hissing and imitations of the crowing of a cock so as to render it impossible for the usher and boys within the school to hear or profit by one word that was said