The materials employed are resin oils, resin, heavy petroleum, animal greases, soda, lime, etc. The following may be taken as examples: - (a) Petroleum residue 40 gal., resin 601b., animal urease 501b., caustic soda lye 21/4, gal., salt 51b., dissolved in a little water. The oils are heated togetgher, and the soda lye and salt gradually stirred in, when partial saponification takes place. (b) Resin oil 1001b., and slaked lime 90 1b.; heat together, and stir thoroughly until a homo-geneous mass is formed. (c) Heat together l lb. of palm oil, 1 lb. of palm oil soap, 55 lb. of resin oil, and then gradually add, while stirring. 101b. or 20 lb. of strong soda lye, until a uniform paste is formed. These greases are sometimes mixed with blacklead, or rendered thicker and more viscous by additions of inert weighting materials, such as barytes, china clay, gypsum, etc.