Firing Tiles

We just unloaded the bisc,with another batch of porcelain tiles: they were stacked like this in the kiln- layers four or five high- [last time I fired them standing up,and rather a lot cracked along their edges] and only one cracked [and that a small one],so I guess this is the way to do it. I have been known to forget the outcome of successful experiments [and senselessly repeat mistakes],so I took this picture to remind myself for next time.