５．反応が終わったら、濡れ雑巾の上に試験管をおく。

tbd

5. When the reaction is over, place the test-tube on a damp cloth.

試験管を壊したり、おもしろ半分に化学製品をあれこれいじって遊んだが、時には、教師の指示になんとか従って、ずっと以前に他の人々が試みた実験を繰り返すこともした。

tbd

Although I broke test tubes and played about with chemicals for fun, I did occasionally manage to obey the teacher's instructions as well; repeating experiments that others had long ago undertaken.