Outlying Clusters of the Perseïds

Abstract

THE clearness of the sky, and the absence of the moon's light at the end of July and in the beginning of August last, were unusually favourable conditions here for watching the progress of the August meteor-shower of Perseïds from the first signs of its appearance up to very near its date of greatest brightness. Having intended to observe the shower in connection with a watch arranged by Mr. Denning to be kept on the Perseïds this year at many places, and an early beginning of the watch having been recommended, in order to note the progressive changes of the radiant-point's position, I had little expectation of being able to contribute much to this inquiry from the usual scarcity of the Perseïd meteors in the shower's early stages.