Building up

I got an early bus up to town (recalling that it's in July and August that the no 35 has been known to reduce to a snail's pace) but it wasn't held up at all, so I arrived much to early. Students arrived eventually and we had a couple of hours going through mathematical proof and then dynamics (had a wee break in between to allow for head adjustment). Waiting for the bus back outside John Knox House I observed that visitor numbers are definitely building up!