concept

Specification of Henry Bright : drying sewage.

Specification of Francis Parry : drying precipitated sewage, &c.

Specification of William Clark : desiccating and preserving matters from decay.

Specification of John Donaldson : preserving animal and vegetable substances.

Specification of Thaddeus Hyatt : preparing and preserving substances for dietary and medicinal uses.

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Drying

Catalogue

Specification of Henry Bright : drying sewage.

Specification of Francis Parry : drying precipitated sewage, &c.

Specification of William Clark : desiccating and preserving matters from decay.

Specification of John Donaldson : preserving animal and vegetable substances.

Specification of Thaddeus Hyatt : preparing and preserving substances for dietary and medicinal uses.