Since the introduction of the use of iodized oil by Sicard and Forestier,1 many uses have been found for the iodized oil in the roentgen-ray study of the lungs and pleura. The methods described by the originators are complicated and require unusual, expert skill in the use of intratracheal instruments. While there can be no objection to the methods that have been outlined by various authors, it seems that the simplest method would obviate the use of the bronchoscope and the intratracheal introduction of instruments in many cases.
In a communication by Lian, Darbois and Navarre2 in 1922, it was suggested that the iodized oil could be aspirated into the lungs by pulling out the tongue and injecting the oil at the base of the tongue. Apparently this method has not been in vogue in the United States, although Pritchard3 of Battle Creek, Mich., has done considerable