The wall between them is perforated, giving passage to coarse strands of protoplasm.
With another form of gas stove coke is used in place of the perforated asbestos; the fire is started with the gas, which, when the coke is well alight, may be dispensed with, and the fire kept up with coke in the usual way.
It is evident that accurate knowledge of the character and structure of the rock-formations in petroliferous territories is of the greatest importance in enabling the expert to select favourable sites for drilling operations; hence on well-conducted petroleumproperties it is now customary to note the character and thickness of the strata perforated by the drill, so that a complete section may be prepared from the recorded data.
In front of the naked eye was held a piece of copper foil perforated by a fine needle hole.
Above is a graceful balustrade behind which is a lofty roof, and at the angles are towers perforated for the passage of the light.
