Key points are not available for this paper at this time.
Abstract In the course of photographic studies of lightning with the Boys' camera, which have been described in previous papers, discharges have occasionally been observed which did not seem to fit in completely with the general picture to which the majority conformed. A sufficient number of these apparently anomalous discharges has now been obtained for their peculiarities to be cleared up and for us to be able to show that their behaviour is in accord with principles identical with whose which govern the more usual type of discharge. The anomalies to be discussed are of two binds. In the first place there are discharges which exhibit abnormal first leader processes. Some mention of these has been made in a previous paper in connexion with their electrical effects, which are characteristic and easi1y distinguishable (Schonland, Hodges and Collens 1938). Secondly there are discharges some of whose subsequent strokes adopt a new channel for park of their length.
Schonland et al. (Fri,) studied this question.