lu studying,' any group of osciiiiue birds it is impossible, or at the best extreme'y difficult, to tell where to stop, and the question is quite as often decided by the lack of material as by any other cause. Thus the present paper is the outcome of a study of the Mimince, which naturally included the Wrens also, and from them led by way of Chanuta to the Titmice, and but for the cause above m...

The first George Frederic Still Memorial Lecture was delivered in 1943 by S. P. Bedson, Professor of Bacteriology at the London Hospital. In expressing his appreciation for being asked to inaugurate this lectureship, he described his particular satisfaction that the choice should have fallen on a laboratory worker since it carried with it the assurance that research of the kind he had been doin...