"The stiff working of heavy-bodied, blown, or heat-oxidized oils, produced films which in some cases gave a very glossy surface, even on the priming coat. Some of these resembled varnished work when finished. It will be of importance to watch these tests carefully for any signs of early breakdown, which might come from too thick a film. The treated Chinese wood oil paints worked rather stiff but produced very smooth films. The rosin oil paints became slightly lumpy on standing, but worked out to a smooth finish somewhat yellowish in color. The marine animal oils, especially the menhaden oil mixtures, dried to a film slightly flatter than straight linseed oil. Any odor which was present in the paints made from the animal oils seemed to disappear a few hours after application. The cotton seed and corn oil mixtures made the slowest drying paints, but at the end of the second week of the drying period they set up rapidly to firm films. Soya bean and perilla oils behaved like straight linseed oil, the former being a little slower and the latter slightly more rapid in drying properties. The perilla oil was made from one of the first importations into this country, and was dark in appearance. It made, however, a very easy-working and hard-drying paint. "The oils used in the tests were obtained from reliable sources. After they were received, they were carefully analyzed. The results of the analyses appear in Table 1. TABLE 1. ANALYSES OF OILS USED IN THE VEHICLE TESTS ===================================+=========+=========+========+======== |Specific |Saponifi-|Iodine | Acid |Gravity | cation |Number |Number | | Number | | -----------------------------------+---------+---------+--------+-------- Raw linseed oil |0.931 | 188 | 186 | 2.0 Boiled linseed oil (linoleate type)|0.941 | 187 | 172 | 2.7 Boiled linseed oil (resinate type) |0.930 | 186 | 176 | 2.2 Blown linseed oil |0.968 | 189 | 133 | 2.8 Lithographic linseed oil |0.970 | 199 | 102 | 2.7 Soya bean oil |0.924 | 189 | 129 | 2.3 Menhaden oil |0.932 | 187 | 158 | 3.9 Perilla oil |0.94 | 188 | 180 | 2.0 Chinese wood oil (raw) |0.944 | 183 | 166 | 3.8 Chinese wood oil (treated)[32] |0.898[32]| 128[32]| 104[32]| 6.8[32] Corn oil |0.925 | 191 | 118 | 9.5 Cottonseed oil |0.921 | 193 | 105 | 3.6 Rosin oil |0.966 | 27 | 41 |16.7 Whale oil |0.924 | 191 | 148 | -- Neutral petroleum oil[33] |0.916 | 6 | 12 | --