My new incubator arrived Friday and keeps a perfect temperature of 100.5 degrees. I can't find the little "ready" light, but I do have a thermometer: success at last.
I have given up on the silkworm eggs, and while the snails ate four ounces of cabbage in less than twenty four hours, they continue their refusal to provide a living example of oviparous animals in the classroom. We did run into some mating snails on our field trip, and I considered bringing them back to class as an example for the rest of the terrarium but didn't. The silkworm eggs appear to have failed; I'm not sure why.