102 QUANTITATIVE AGRICULTURAL ANALYSIS Determination of Specific Gravity.—Make accurate determinations of specific gravity of solutions of methyl alcohol, ethyl alcohol, cane sugar, etc., as they may be furnished by the instructor, and using the methods described In the foregoing pages. Report the per cent concentration of the solutions, found by reference to tables such as those mentioned above. The tempera- ture used for the determination must correspond to that for which the table in question is constructed. In Chap. X this determination is applied to the identification of the various oils, fats and waxes and in Chap. XI, dealing with the analysis of dairy products, the application of specific gravity determinations to milk testing is discussed.