13 NOVEMBER 1926, Page 20

* * * * Twelve Tips to Travelling Salesmen (Efficiency

Magazine. 5s.) is not the kind of book that often comes to the Spectator. But Mr. Casson, the author, has some eminently sensible advice to offer on the interesting and (in England) little- studied art of selling. Apparently one of the first points is to niake the customer talk about himself and his difficulties. " This normalizes him : that is what we learn from Freud, of Vienna." Which goes to show how business is taking up the study of psychology.