“We take them up as Social Cells, Nuclei, I think the professor calls them.”

“And how do you go at them?” I asked.

“Why, the girls go to them in little laboratory groups and study them.”

“They eat ice-cream in them?”

“They have to,” she said, “to make it concrete. But while they are doing it they are considering the ice-cream parlour merely as a section of social protoplasm.”

“Does the professor go?” I asked.

“Oh, yes, she heads each group. Professor Thinker never spares herself from work.”

“Dear me,” I said, “you must be kept very busy. And is Social Endeavour all that you are going to do?”

“No,” she answered, “I’m electing a half-course in Nature Work as well.”

“Nature Work? Well! Well! That, I suppose, means cramming up a lot of biology and zoology, does it not?”