Henry How

In 1847, How and August Wilhelm von Hofmann were co-workers at the Royal College in London.

How was a professor of chemistry and natural history at King's College in Windsor, Nova Scotia.

In 1864 How published the description of a new zeolite mineral, that he named mordenite, from along the shores of the Bay of Fundy.

[3] How named it silicoborocalcite but was renamed howlite in his honor by James Dwight Dana.

[4] He studied many other zeolites and related minerals from the Bay of Fundy basalts, borates from the gypsum and anhydrite deposits, as well as ores of manganese and iron.