JUST SO everyone will know: While the Professor was off on sabunyipbatical, Blogger re-did its publishing software. There is no great improvement over the former back end, with one or two things being decidedly more cumbersome. Comments, for example, leave much to be desired -- valid ones get gobbled by the spam filter, and unless one goes back to the publishing system's dashboard page, there are no notations to indicate fresh observations have arrived.
Apologies to readers whose comments have not appeared. A trove of lost words has just turned up in the spam bin and all have been published. With any luck things will settle down soonish.