, instead of discovering the principle of gravitation. Nero’s dinner shall transform Nero into the mildest of men before he has done digesting it, and the morning draught of Alexander the Great shall make Alexander run for his life at the first sight of the enemy the same afternoon. On my sacred word of honour it is lucky for Society that modern chemists are, by incomprehensible good fortune, the most harmless of mankind. The mass are worthy fathers of families, who keep shops. The few are philosophers besotted with admiration for the sound of their own lecturing voices, visionaries who waste their lives on fantastic impossibilities, or quacks whose ambition soars no higher than our corns. Thus Society escapes, and the illimitable power of Chemistry remains the slave of the most superficial and the most insignificant ends.

Why this outburst? Why this withering eloquence?