— Sterilization of, [679]

— to Clean, [210]

Spot and Stain Removers, [185]

— Gilding, [580]

Spots on Photographic Plates, [554]

Sprain Washes, [730]

Spray Solution, [103]

Spring Cleaning, [207]

— Hardening, [685]

Springs of Watches, [737]