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The Ancash State regional health office said 140 people were treated for “irritative symptoms caused by the inhalation of toxins” after a pipeline carrying the concentrate under high pressure burst open in their community.

During the remainder of the intermission the pulse may be normal, or it may continue accelerated in consequence of some irritative condition; as the time for the relapse approaches it frequently again becomes abnormally slow.

It seems probable that the heart condition was acquired as a consequence of some irritative lesion affecting the inhibitory nerves to the heart that developed at that time.

That an irritative lesion in the line of the centripetal tracts can influence cortical life is shown by thalamus lesions in which hallucinations are sometimes present.

To this satisfactory result must be added the irritative effect on enemy morale of the knowledge that whenever the weather was fine our machines hummed overhead, ready to molest and be molested.