Prior to its construction, a school bus could only pass over it empty, necessitating the children to alight, walk, and rejoin their transportation of the far side.
Ventilating radiators are similar, but have an inlet arrangement at the base to allow external air to pass over the heating surface before passing out through the perforations.
Lastly, to pass over unnecessary details, the markings of various kinds to be observed on the lobes of the livers of freshly-slaughtered animals, which are due mainly to the traces left by the subsidiary hepatic ducts and hepatic veins on the liver surface, were described as "holes," "paths," "clubs" and the like.
When a key is depressed, slightly raising one of the pins, the horizontal arm will pass over it and in doing so will momentarily join the battery to the line.
They freeze in winter and dry up in summer, and most of them are navigable only during the spring floods; even the Volga becomes so shallow during the hot season that none but boats of light draught can pass over its shoals.