One at night
Please step this way and I will show you our Laboratory of Learning . '' He led them to a room in the building where many large bottles were standing in rows upon shelves . `` These are the Algebra Pills , '' said the Professor , taking down one of the bottles . `` One at night , on retiring , is equal to four hours of study . Here are the Geography Pills -- one at night and one in the morning . In this next bottle are the Latin Pills -- one three times a day . Then we have the Grammar Pills -- one before each meal -- and the Spelling Pills , which are taken whenever needed . ''