The acid was evidently a mixture, and had no definite melting point. It was solid at 9 deg. C., and sufficiently soft to flow at 12 deg. C., but did not entirely liquefy under 22 deg. C. To test its neutralizing power, 0.9575 gramme dissolved in alcohol was titrated with decinormal alkali; it required 34.05 c.c. This amount of pure oleic acid would require 33.95 c.c.; of pure stearic acid, which has almost the same molecular weight as oleic acid, 33.71 c.c.; or of pure palmitic acid, 37.4 c.c. This, taken in conjunction with the way in which the acid melted, makes it extremely probable that it is a mixture of oleic and stearic acids. Additional evidence of the large proportion of oleic acid was furnished by forming the lead salt, and treating with ether, in which lead oleate is soluble, the stearate and palmitate being insoluble. In this way it was found that the oleic acid obtained from the ethereal solution of the lead salt amounted to 83.15 per cent. of the oil. This acid was proved to be oleic, by its saturating power and its melting point, which were fairly concordant with those of the pure acid. CABBAGE OIL (_Brassica, sp._). _Appearance, etc._--The sample was of a deep brown color, of a fluidity intermediate between olive and castor oil, and possessed a strong, rather disagreeable odor. _The Specific Gravity at 60 deg. Fahr._, 914.0.--The specific gravity of rape oil and colza oil, both of which are obtained from species of the genius _Brassica_, varies from 913.6 to 916. _Exposure to Cold._--This oil by exposure to a temperature of -12 deg. C. (10 deg. F.) becomes solidified in course of an hour, a bright orange-yellow mass resulting. _Qualitative Examination._--The three reagents before indicated were applied to this oil. _(a.) Sulphuric Acid._--The color produced was very marked and characteristic; it differed considerably from any of the others simultaneously tested, the nearest to it being olive end rape oil. _(b.) Strong Nitric Acid._--The reaction was more violent than before, the stratum of oil after cooling being darker in color than in the three cases before mentioned. The reaction with rape oil was similar in all respects. _(c.) Elaidin Test._--The solid mass of elaidin formed was of a darker color than that from olive, almond, and tea oil, but closely resembled that from rape oil. _Free Acidity._--This was estimated as above described. 100 grammes of oil would require 0.125 gramme caustic potash. The samples of rape oil examined by Deering (loc. cit.) were found to require from 0.21 to 0.78 KOH per 100 grammes oil. _Saponification of the Oil._--Upon saponifying with alcoholic potash, it was found that 1,000 grammes of oil required 175.2 grammes of potash for complete saponification.