Question Author
Thank you, that is the picture referred to in a book I have just seen called "The World of Spiders" No. 38 in the New Naturalist Series, published in 1958. It does say in the reference that it was painted on a spider's web. What made you think it was a caterpillar's web, they don't make webs do they? I thought caterpillars turned into butterflies.
I'll have to make a trip to Chester to see it, it looks so delicate in the photo, and Chester isn't too far away from where I live in Cheshire. Thanks again. Schutz.
PS. My job is to catalogue rare and antique books, the trouble is I keep finding ones that I would like to read instead of getting on with what I should be doing.