Page 86 Right column; sentence starting with line 6 should read as follows:
A tracheal cannula was inserted; a femoral vein was cannulated for subsequent intravenous injections and systemic blood pressure was recorded from a common carotid artery connected to a mercury manometer or by a Statham transducer.
Page 90 Left column; sentence starting with line 7 should read as follows:
Since the same concentration (0.003 per cent) was used with both drugs, it appears that these agents are equally effective in raising the threshold of response to electrical stimuli.
- © 1959 American Heart Association, Inc.