by R.G. E. Mur­ray — There is much that should be re­mem­bered about those days of in­ten­sive ex­ploratory work and much of it us­ing very sim­ple meth­ods and in­stru­ments. There was a re­mark­able amount of shar­ing of cur­rent work and re­sults with­out much con­cern for pri­macy, which was au­to­mat­i­cally rec­og­nized. Com­mu­ni­ca­tion was of­ten by hand…