Charles Boutell establishes heraldry as a precise pictorial and symbolical language originating in the feudal chivalry of the thirteenth century. The text traces armory from its early military utility on shields, banners, and surcoats to its expansion into seals, monumental effigies, and architectural decoration. Boutell emphasizes that English heraldry arose independently of ancient Greek and Roman symbolism, developing its own systemic grammar, technical nomenclature, and fixed rules of blazon. The core argument addresses the debasement of heraldic art during the seventeenth and eighteenth centuries, when extravagant fables, allegorical nonsense, and pictorial landscapes replaced the dignified simplicity of early armorial bearings.
The manual provides a thorough grammatical breakdown of heraldic elements, categorized into tinctures, metals, furs, ordinaries, and subordinaries. Each bearing, from the chief and fesse to the cross and saltire, is explained through its structural origins as mechanical reinforcement for military shields. The text investigates the rules governing tinctures, noting the strict prohibition of metal upon metal and colour upon colour, alongside methods of counterchanging and diapering.
Human figures, animals, birds, fish, and fabulous beasts receive detailed classifications, with specific focus on the heraldic lion and eagle as principal charges. The work concludes with comprehensive sections on cadency, differencing, and marshalling, detailing how arms are combined through quartering, impalement, and escutcheons of pretence to record familial alliances and descent. Boutell advocates for a rigorous revival of early heraldic art, urging modern practitioners to balance traditional conventionalism with natural truth.