Note 16 — [From Bentley's Miscellany.] THE HISTORY AND MYSTERY OF THE GLASS-HOUSE.

To such an extent has this jealousy been carried, that many adroit expedients have been employed to mislead and baffle curiosity. Hence the infinite variety of receipts for the production of different sorts of glass that have been launched upon the public, a vast number of which have been got up expressly for the purpose of deceiving and misdirecting the inquirer. To this circumstance may be referred the remarkable contradictions and inconsistencies that may be detected in all treatises on the subject.