321. Density -- N. density, solidity; solidness &c adj.; impenetrability, impermeability; incompressibility; imporosity ; cohesion &c 46; constipation, consistence, spissitude .
322. Rarity -- N. rarity, tenuity; absence of solidity &c 321; subtility ; subtilty , subtlety; sponginess, compressibility.
323. Hardness -- N. hardness &c adj.; rigidity; renitence , renitency; inflexibility, temper, callosity, durity .
324. Softness -- N. softness, pliableness &c adj.; flexibility; pliancy, pliability; sequacity , malleability; ductility, tractility ; extendibility, extensibility; plasticity; inelasticity, flaccidity, laxity.
325. Elasticity -- N. elasticity, springiness, spring, resilience, renitency, buoyancy.
326. Inelasticity -- N. want of elasticity, absence of elasticity &c 325; inelasticity &c (softness) 324,
327. Tenacity -- N. {ant.
328. Brittleness -- N. {ant.
329. [Structure.] Texture -- N. structure (form) 240, organization, anatomy, frame, mold, fabric, construction; framework, carcass, architecture; stratification, cleavage.
330. Pulverulence -- N. powderiness [State of powder.], pulverulence ; sandiness &c adj.; efflorescence; friability.