the new booklet just issued by G. Brandes, Inc., 32 Union Square, New York, covers the installation and selection of wireless apparatus in a very readable and helpful manner. The beginner will find complete instructions for constructing a station and the advanced amateur will find many hints on how to increase the efficiency of his apparatus. This is one of those desirable booklets that give much information in a very few pages. Booklet will be mailed to anyone sending 4c in stamps to Room 822.