III.—Melt 20 parts of rosin oil in 50 parts of yellow palm oil, saponify this with 25 parts of caustic soda lye of 15° Bé., and add 25 parts of mineral oil or paraffine.
IV.—Mix residue of the distillation of petroleum, 60 to 80 parts; tallow, 10 parts; colophony, 10 parts; and caustic soda solution of 40° Bé., 15 parts.
A Grease For Locomotive Axles.
Miscellaneous Lubricants:
For Cotton Belts.
Chloriding Mineral Lubricating Oils.
Glass Stop Cock Lubricant.
| Pure rubber | 14 parts |
| Spermaceti | 5 parts |
| Petroleum | 1 part |
Melt the rubber in a covered vessel and then stir in the other ingredients. A little more petroleum will be required when the compound is for winter use. {463}