General system of chemistry, theoretical and practical

Dimensions:
Arms Quarterly in the second and third quarters a fret overall on a bend three escallops (Spencer) impaling Quarterly 1 & 4. A bend cotised between six crosses patty (Bingham) 2 & 3. Ermine a lion rampant ducally crowned (Turberville) Supporters A griffin and a wyvern erect on its tail both collared and chained Crest Out of a ducal coronet a griffin's head and wings gorged with a bar gemelle Coronet of an Earl Motto DIEU DEFEND LE DROIT