Over the surface of the plate and between it and the indicator there was passed, at a regularly uniform speed, in a direction perpendicular to the line of motion of the indicator, a material capable of being acted on physically by the sparks, through either their chemical action, their heat, or their perforating force. [Please select]
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This fact is not unrecognised; I have on occasion found the insect perforating the scaly cup. [Please select]
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As far as the perforating beak can plunge, so far the oviscapt, the interior rostrum, will reach. [Please select]
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If the obstruction is more extended it may be perforated by Lüthi's perforating sound. [Please select]
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Such is the strange perforating machine that is to prepare an outlet for the feeble Anthrax through the Mason bee's cement. [Please select]
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So soon as the day grew warm, these active creatures were at work perforating the wooden columns which supported the verandah. [Please select]
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I have already spoken of the innumerable chimneys perforating the Azoic beds, narrow outlets of Plutonic rock, protruding through the earliest strata. [Please select]
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A transversal cleft makes its appearance on the forehead, at the bottom of the perforating diadem; a second, but longitudinal slit divides the skull in two and extends down the thorax. [Please select]
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It goes on to say that the parasitic vermin inhabit the chrysalis, whence they make their way out by perforating the stout horny wrapper. [Please select]
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