Reports by the juries on the subjects in the thirty classes into which the exhibition was divided

Class IV. Report on animal and vegetable substances, chiefly used in manufactures, as implements, or for ornaments.

Class VIII. Report on naval architecture and military engineering; ordnance, armour, and accoutrements.

Class IX. Report on agricultural implements.

Class X. Philosophical instruments and processes depending upon their use.

Class XIX. Report on tapestry, including carpets, floor-cloths, etc., lace, fancy embroidery, and industrial works.

Class XXIII. Report on works in precious metals, jewellery, articles of virtu, etc.

Class XXIX. Report on miscellaneous manufactures and small wares.

Class XXX. Supplementary report.