American Meteorological Journal, June.—The principal articles are:—The Thermophone, by H. E. Warren and G. C. Whipple. This is an instrument for measuring temperature, particularly of distant or inaccessible places. It was devised by the authors for the purpose of obtaining the temperature of the water at the bottom of a pond, but is also suitable for obtaining the temperature of the soil at various depths. The apparatus resembles Siemen's resistance thermometer, advantage being taken of the fact that different metals have different electrical temperature coefficients. The instrument is not yet self-recording.—California electrical storms, by J. D. Parker. The object of the paper is to inquire into the causes of the infrequency of electrical storms in California. At San Diego, for instance, the Weather Bureau has only reported two electrical storms in the last sixteen years. Among the principal causes, the author mentions the humidity of the atmosphere, the absence of excessive heat during the rainy season (September to May), and the absence of cyclones during the dry season (May to September).