It is at once a difficult and thankless task to give recipes or formulas for this class of work, because of the fact, that most every railroad company, whose equipment consists of steel passenger and baggage and mail coaches have their own standards, that must be matched. Take for instance, the Pennsylvania Railroad Tuscan red, that is supplied in paste form, ground in raw linseed oil and turpentine to specifications. If a color grinder were to furnish this color as a ready to use enamel, he would hardly ever succeed in producing two batches uniform in color effect after application. This is why the painters of that road still make use of the method in practice for years, even if they do bake every coat, that is, they reduce so much paste with so much coach japan, rubbing varnish and turpentine. Were they to add more varnish at one time than another, the color would show quite a different effect. And the same applies to such a one as Pullman color to a still greater degree, although this color can be ground directly in varnish, that would serve well for baking. Still there are no two Pullman coach colors in japan, as received from various shops, precisely alike. Therefore in matching a Pullman color, which may be termed a composite color, in ready for use form as an exterior gloss or enamel finish, the pigments must be ground in clear baking varnish, if the finish is to be baked.