Science

Fair Science frowning on an humble birth. Her deeper frown on sulphuretted hydrogen. Demonstrator upsets nitric acid. Specific gravity of class upset. The Torricellian vacuum. Cleaning the vacuum. (Inset, the vacuum cleaner; can be used for the head.) The wet-and-dry bulb. Johnson’s hydrometer. Converting a pussyfoot into liquid measure with caustic soda water. Electrolysis. Analysis. Paralysis.