Life certainly is interesting.
We apologize for the lateness with which this issue is reaching you. The computer medium differs from the written word in that programs and data can be updated and the updates incorporated directly into the previous version. Consequently we shall from time to time publish corrigenda in electronic form. Discoverer has been updated to include, among other things, new atomic weight values for some elements, and the number of videodisc players supported by the program has been expanded from one to three. One of the spreadsheets in the physical chemistry issue has been modified so that several algebraic signs are now correct.