It looks like I became a character in a comic book!
You can find a document about the whole Basel meeting at this link. Below, the two pages dealing with my talk. Note that they use the beautiful name of "clepsydra" for an object normally called "hourglass". Literally, clepsydra means "thief of water" and it refers to ancient water clocks.
To read the text below, enlarge the images by clicking on them.