On returning to England the same year, he again considered Holy Orders but instead was attracted to Manchester to join the chemical laboratory of Lyon Playfair at the Manchester Royal Institution. Here he became involved in some of the environmental issues of the world's first industrial city (see History of Manchester). Playfair left for greener pastures in 1845 and Smith worked at making a living as an independent analytical chemist. After some initial alarming experiences, Smith refused to take on expert witness work which was a staple of consulting scientists of the day and which he saw as corrupt. Consequently, when the Alkali Inspectorate was established by the Alkali Act 1863, Smith's integrity made him the natural candidate. He held the post until his death.
In 1872 Smith published the book Air and Rain, which presents his studies of the chemistry of atmosphericprecipitation.
After some initial alarming experiences, Smith refused to take on expert witness work which was a staple of consulting scientists of the day and which he saw as corrupt.
Smith notes that it is Christian writers who make the death and resurrection parallels between their own faith and the Mysteries clearest, and thus he theorizes that Christians may have been projecting the categories of their own faith onto their rivals'.
Smith seems to infer that in the missing lines it would have been discovered that Baal was the victim of a premature burial, that the reports of his demise, like Mark Twain's, were premature.
Smith describes how scholars early speculated from the fragmentary Tammuz texts that he had been depicted as dying and rising, though the evidence was touch and go.